DRAFT UGANDA STANDARD  
  DUS 249 -3 
Second Edition  
2018 -mm-dd 
 
 
 Reference number  
DUS 249 -3: 2018  
© UNBS 2018   
  
Engine Oils — Performance Classification — Part 3: API 
Specification for light and heavy duty Compression - ignition 
(diesel) engines  
 DUS249-3: yyyy  
ii © UN BS yyyy – All rights reserved  
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not pur port to include all necessary provisions of a contract. Users are 
responsible for its correct application  
© UNBS  2018   
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, e lectronic or mechanical, including photocopying and microfilm, without prior written 
permission from UNBS.  
Requests for permission to reproduce this document should be addressed to  
The Executive Director  
Uganda National Bureau of Standards  
P.O. Box 6329  
Kampala  
Uganda  
Tel: +256 41 4 333 2 50/1/2/3  
Fax: +256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  DUS 249 -3:yyyy  
© UNBS yyyy – All rights reserved  iii 
 Contents  Page 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  2 
4 Abbreviated terms  ................................ ................................ ................................ ................................ . 3 
5 Classification  ................................ ................................ ................................ ................................ .........  3 
5.1 Classification according to viscosity  ................................ ................................ ................................ .. 3 
5.2 Classification according to performance ................................ ................................ ............................  3 
6.1 General requirements  ................................ ................................ ................................ ...........................  3 
6.2 Viscosity Grades  ................................ ................................ ................................ ................................ ... 4 
6.3 Performance Categories  ................................ ................................ ................................ .......................  5 
6.3.1  Light duty internal compression engine  ................................ ................. Error! Bookmark not defined.  
6.3.1  Heavy duty internal compression engine  ................................ ............... Error! Bookmark not defined.  
6.4 Test requirements  ................................ ................................ ................................ ................................ . 5 
7 Packaging and Labelling  ................................ ................................ ................................ ......................  5 
7.1 Packaging  ................................ ................................ ................................ ................................ ...............  5 
7.2 Labelling  ................................ ................................ ................................ ................................ .................  6 
8 Sampling  ................................ ................................ ................................ ................................ ................  6 
Annex  A (normative)  Laboratory/ bench  test requirements  ................................ ................................ ........  1 
A.1  Requirements for API service category API CK -4 and FA -4 categories  ................................ .........  1 
A.2  Requirements for API service category CJ -4 ................................ ................................ ....................  2 
A.3 Requirements for API service category CL -4 and CL -4 Plus  ................................ ............................  3 
A.4 Requirements for API service category CH -4 ................................ ................................ .....................  4 
Annex  B (normative)  CH - 4 Multiple Test Programs  ................................ ................................ ......................  5 
B.1 CH- 4 Multiple Test Programs  ................................ ................................ ................................ ..............  5 
B.2  Multiple test acceptance criteria  ................................ ................................ ................................ ..........  6 
Annex C (informative)  Current and Obsolete engine oil Categori es for compression ignition 
engine applications  ................................ ................................ ................................ ...............................  7 
C.1 API Categories  ................................ ................................ ................................ ................................ ....... 7 
Bibliography  ................................ ................................ ................................ ................................ ......................  10 
 DUS249-3: yyyy  
iv © UN BS yyyy – All rights reserved  
 Forewor d 
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade , Industry and 
Cooperatives established under Cap 327 , of the Laws of Uganda , as amended .  UNBS is mandated to co -
ordinate the elaboration of standards and is  
(a) a member  of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT  Agreement  of the World Trade Organisation (WTO).  
The work of preparing Uga nda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of key stakeholders 
including government, academia, consumer groups, private sector and other i nterested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration  as Uganda Standards by the National Standards Council.  
The committee responsible for this document is Technical Committee UNBS /TC 16, [Petroleum Products and  
Facilities ], Subcommittee SC 1, [Petroleum and Petrochemicals Products ]. 
This second  edition canc els and replaces the first edition ( US 249:2000 ), which has been technically revised.  
US 249  consists of the following parts, under the general title Engine oil — Performance Classification :  
  Part 1 : General  
  Part 2 : API Specification for Spark Ignitio n (petrol) engines  
  Part 3 : : API Specification for light and heavy duty Compression ignition (diesel) engines  
  Part 4: : Specification for internal combu stion engine oils used in four stroke -cycle motorcycle 
gasoline engines and associated drive trains  
  Part 5: Specification for Internal Comb ustion engine oils used in two stroke -cycle motorcycle 
gasoline engines and associated drive trains  
. DUS 249 -3:yyyy  
© UNBS yyyy – All rights reserved  v 
 Introduction  
Due to the technological advances that have occurred since the publishment of US 249:2000/ EAS 15 9, it has 
become necessary to keep abreast with such changes, hence the revision of this standard.  
It has become necessary to sub -divide this standard into five parts.   
DUS 249 -1:2017  Engine Oil — Performance Classifications — Part 1: General,  
DUS 249 -2:2017  Engine Oils — API Performance Classifications — Part 2: API Specification for Spark 
Ignition (petrol) Engine Oils  
DUS 249 -3: 2017  Engine Oil — API Performance Classification — Part 3: API Specification for light and heavy 
duty compression Ignition  (diesel)  engine oil  
DUS 249 -4: 2017  Engine Oil — Performance Classification — Part 4: Specification for internal combu stion 
engine oils used in four stroke -cycle motorcycle gasoline engines and associated drive trains  
DUS 249 -5: 2017  Engine Oils — Performa nce Classification — Part 5: Specification for Internal Com bustion 
engine oils used in two  stroke - cycle motorcycle gasoline engines and associated drive trains  
Note: Current engine oil categories that may be deemed obsolete by API during the course of th e application of 
this standard shall be considered obsolete as well  
 
 
 DRAFT UGANDA STANDARD  DUS 249 -3: yyyy  
 
© UNBS yyyy – All rights reserved  1 
 Engine Oil  — Performance Classification  — Part 3: 
Specification for light and heavy duty compression Ignition 
(diesel) engine oil  
1 Scope   
This Draft Uganda standard specifies requirem ents a nd test methods for light and heavy duty naturally 
aspirated, turbo -charged or super -charged compression -ignition engines, meeting or e xceeding API Service 
Category CH -4. 
It does not cover engine oil for spark ignition engines, aviation equipment, ou tboard motors, lawn mowers, 
railroad, locomotives, industrial and marine application . 
2 Normative references   
The following referenced documents referred to in the text in such a way that some or all of their content 
constitutes requirements of this docume nt. For dated references, only the edition cited applies. For undated 
references, the latest edition of the referenced document (including any amendments) applies.  
DUS 2040 , Standard test method for flash and fire points by Cleveland open cup tester  
DUS 20 53 Standard Test Method for Determination of Homogeneity and Miscibility in Automotive Engine Oils  
US 1730:2017 , Standard test method for pour point of petroleum products.  
US ISO 3104:1994 , Standard test method for kinematic viscosity of transparent and op aque liquids (the 
calculation of dynamic viscosity).  
DUS 2067  Standard Test Method for Sulfated Ash from Lubricating Oils and Additives  
DUS 2067 Standard Test Method for Measuring Apparent Viscosity at High -Temperature and High -Shear 
Rate by Multicell Capi llary Viscometer  
DUS 2068 Standard Test Method for Evaluation of Corrosiveness of Diesel Engine Oil at 135°C  
DUS 2041 , Standard test method for foaming characteristics of lubricating oils.  
DUS 2042 , Standard practice for calculating viscosity index from ki nematic viscosity at 40 and 100 °C.  
DUS 2073 , Standard Test Method for Boiling Range Distribution of Petroleum Fractions by Gas 
Chromatography1, 2  
US 1732:2017 , Standard practice for manual sampling of petroleum and petroleum products  
US 1733:2017 , Standard practice for automatic sampling of petroleum and petroleum products.  
DUS 2068 Standard Specification for Fuel System Icing Inhibitors   
2 © UNBS yyyy– All rights reserved  
 DUS 2071 , Standard test method for measuring viscosity at high shear rate and high temperature by tapered 
bearing simulator  
DUS 2074 , Standard test method for determination of yield stress and apparent viscosity of engine oils at low 
temperature coupled plasma atomic emission spectrometry.  
DUS 2045 , Standard Test Method for Determination of Additive Elements in Lubricating Oils by Inductively 
Coupled Plasma Atomic Emission Spectrometry  
DUS 2072 Standard Test Method for Determining Automotive Engine Oil Compatibil ity with Typical Seal 
Elastomers  
DUS 2046 , Standard test method for evaporation loss of lubricating oils by the Noack method.  
DUS 2075 . Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel 
Injector Apparatus  
DUS 2074  Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Used Engine 
Oils at Low Temperature  
DUS 2069 , Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel 
Injector Apparatus at 30 and 90 Cycle  
DUS 2070 , Standard Test Method for Evaluation of Diesel Engine Oils in the T -11 Exhaust Gas Recirculation 
Diesel Engine  
DUS 249 -4, Engine  Oil- Performance Classification - Part 4: Specification for internal combustion engine oils 
used in four –stroke - cycle motorcycle gasoline engines and associated drive trains  
DUS 249 -1:2018 , Engine Oil - Performance Classification - Part 1 - General  
3 Terms and definitions   
For the purposes of this document, the terms and definitions given in DUS 249 -1 and the following apply.  
3.1  
additives  
material added to the lubricant for the purpose of imparting new properties or enhancing existing properties  
3.2  
heav y duty engine  
an engine that is designed to allow operations continuously at or close to its peak output.  Such engine is 
installed in large trucks and buses, as well as farm, Industrial, and construction equipment.  
3.3  
light duty engine  
an engine that i s designed to be normally operated substantially less than its peak output. This type of engine 
is typically installed in Automobiles and small trucks, vans and buses.  
 
3.4  
miscibility   
the ability of reference oil and test oil to form a uniform mixture a fter blending and not separate into two 
phases after submission to a series of temperature changes  
 
3.5  
tamper proof seal   
seal designed such that malicious disassembly and reassembly using commonly available tools will be 
detected upon visual inspection   DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  3 
 4 Abbreviated terms  
For the purposes of this standard, the following abbreviations in addition to those indicated in DUS 249 -1, 
shall apply:  
4.1  
EELQMS  
European Engine Lubricants Quality Management System.  
4.2  
EOLCS  
Engine Oil Licensing and Certificati on System . 
5 Classification  
Engine lubricating oils shall b e classified according to viscosity  grade and performance.  
5.1 Classification according to viscosity  
The viscosity of the lubricating oil shall be classified as either single grade or multi -grade b asing on the SAE 
viscosity grades , as per designations indicated in SAE J300  
5.2 Classification according to performance  
Engine lubricating oil shall be classified according to performance based on API classification.   
6.1 General requirements  
The engine o il shall consist of acceptable petroleum products, or of acceptable synthetically prepared 
products, or of a combination of these two types of products, compounded in all cases, with such functional 
additives, for example, detergents, dispersants, oxidatio n inhibitors and corrosion inhibitors as are necessary 
to enable it to comply with the other requirements of this standard.  
6.1.1  Stability  
When teste d in accordance with DUS 2053 , the engine oil shall remain clear and homogeneous, and shall 
show no eviden ce of separation of components and no evidence of colour change.  
6.1.2 Compatibility  
When tested in accordance with DUS 2053 , the engine oil shall be compatible with other oils of the same 
viscosity grade that comply with the requirements of this standard  
6.1.3 Licenses  
6.1.3.1  All products licensed under API shall be listed in API EOLCS licensee directory (www.api.org) and 
shall bear appropr iate labelling as described in 7 .2 in addition to the API Engine oil quality marks  
6.1.3.1  The Uganda National Bureau  of Standard shall be notified of any changes in the formulation  of 
engine oil  and an API warranty certificate shall be produced as evidence before a new spec can be taken for 
reference purposes  
6.1.4 Physico -Chemical Requirements  
6.2.1 The oil shall be f ree from suspended matter, grit, water or any other foreign matter and impurities.   
4 © UNBS yyyy– All rights reserved  
 6.2.2 The oil shall comply with the physico -chemical requirements Table 1 and other bench -test 
requirements as specified in this standard  
Table 1 — Requirements for Physico -Chemical (other than viscosity)  
SI 
No. Characteristics  Requirement for Grade  
(1) (2) SAE 
0W 
(3) SAE 
5W 
(4) SAE 
10W 
(5) SAE 
15W 
(6) SAE 
20W 
(7) SAE 
25W 
(8) SAE 
20 
(9) SAE 
30 
(10) SAE 
40 
(11) SAE 
50 
(12) SAE 
60 
(13) Multi - 
Grade  
(14) Method  
of 
Test 
i) Appe arance  When examined in transmitted light in a colourless test tube of 25mm internal diameter, oil shall be 
clear, bright and free from turbidity and sediments.  
ii) Viscosity index, 
(Min) 100 100 100 95 95 95 95 95 90 90 90 _ DUS 2042  
iii) Pour point, 0C, 
(Max) -33 -33 -27 -24 -21 -15 -9 -6 -6 -6 6 _ US 
1730:2017  
iv) Flash point 
COC 0C, (Min) 160 160 190 190 200 200 200 215 215 220 220 200 or 
185 DUS 2040  
v) Evaporative 
loss, %, 
Max 20 20 20 25 25 15 15 10 10 10 10 22 or 20  DUS 2046  
For defence require ments pour point for SAE 40 shall be -180C, Max and for SAE 50 shall be -90C, Max  
Flash point for multigrade is valid only for 0W -20, 5W -20, 5W -30, 10W -30 and for other multigrades it is not required  
 
 
6.2 Viscosity Grades  
6.2.1 The oils shall conform to one o f the SAE mono -viscosity grades as in  Table  2 or SAE multi -grades, 
which are combinations of W -Grades and other mono -grades, as for example: SAE 10 W and SAE 30 for the 
SAE 10W -30 grade. Viscosity limits for each of the mono -grades are also given in T able 2.  
6.2.2 In case of multi -grades, the prescribed viscosity limits for both the constituent components of the 
multi -grade, shall be met  
Table 2 — Engine oil viscosity classification  
SAE  
Viscosity 
grade  Low –
temperature (oC) 
Cranking 
Viscosity , cp(1)  
(Max)(a) Low temperature 
(oC) Pumping  
Viscosity , cp  
with no yield 
stress  
(Max)(b) Low-Shear -Rate 
Kinematic Viscosity  
(mm2/s)(c) 
at 100 OC(c) High -shear -Rate Viscosity  cP 
at 150 oC  and 106 S(d) 
Min Max 
0 W 6200 at -35 60 000 at -40 3.8   
5 W 6600 at -30 60 000 at -35 3.8   
10 W  7000 at -25 60 000 at -30 4.1   
15 W  7000 at -20 60 000 at -25 5.6   
20 W  9500 at -15 60 000 at -20 5.6   DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  5 
 25 W  13000 at -10 60 000 at -15 9.3   
8 - - 4 <6.1 1.7 
12 - - 5.0 <7.1 2.0 
16   6.1 <8.2 2.3 
20   6.9 < 9.3  2.6 
30   9.3 < 12.5  2.9 
40   12.5 < 16.3  2.9 (0W -40, 5W -40 and 10W -40 
grades)  
40   12.5 < 16.3  3.7(15W -40,20W -40, 25W -40,40 
grades)  
50   16.3 < 21.9  3.7 
60   21.9 < 26.1  3.7 
a test method to be used is DUS 2056  
b test method to be used is DUS 2074  
C test method to be used is US ISO 3104:1994  
d test method to be used is DUS 2043  
 
6.3 Performance Categories  
Candidate engine oils shall be formulated such that their engine performance requirements meet one of the 
performance categories for engine oil seque nce given in Table 3.  
Table 3 — Engine oil performance categories  
Classification  Performance Categories  
API   CJ-4, Cl-4, CI-4 PLUS , CJ-4, CK-4, FA-4 
NOTE:  The consumer shall refer to the owner’s or operator’s manual for recommended category of engine o il to be 
used in a specific engine  
6.3.1  Engine oil  labelled or u sed as light and heavy duty  compression ignition engine oils  under the API 
classification  must have a performan ce not lower than that defined by API CJ-4.  
6.3.2 API categorie  FA-4 shall only  be used for heavy duty compression ignition engines and is not 
Backward Compatible with other API categories listed in table 3.  
6.4 Test requirements  
All engine oil licensed under the API sequence in addition to meeting the requirements stipulated in clau se 6 
above, shall comply with laboratory tests requir ements as specified in Annex A.   
7 Packaging and Labelling  
7.1 Packaging  
The condition of the drums or smaller containers and the bulk tankers into which the engine oil is filled shall 
have no detrimen tal effect on the quality of the engine oil during normal transportation and storage. Only 
containers of the same size filled with oil of the same batch identification shall be packed together in a carton. 
Prior to use, the containers shall be firmly secur ed with a tamper - proof seal.   
6 © UNBS yyyy– All rights reserved  
 7.2 Labelling   
Each container and each carton (if present) shall be legibly and indelibly marked with the following information 
in English language.  
a) product name and application  
b) name and address of the manufacturer and regist ered trade mark if any and/or distributor’s name;  
c) the categories of oils according API service classification  
d) API engine oil quality marks  
e) SAE viscosity grade  
f) net content.  
g) origin of the product/Made in.  
h) Date of production and the batch number  
8 Sampling  
The relevant sampli ng procedure given in US 1733:2017 or in US 1732:2017  shall be used to provide samples  
for testing . DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  1 
 Annex  A 
(normative)  
 
Laboratory/ bench  test requirements  
A.1  Requirements for API service category API CK -4 and  FA-4 categories  
Table  A.1 — Laboratory test requirements for API CK -4 and FA -4 category  
Test method  Measured Parameter  Units  Primary Performance Criteria  
CK-4 
SAE J300 viscosity 
xW-30, xW -40 FA-4 
SAE J300 
viscosity xW -30 
DUS 2071  (High 
temperature/high shear) or 
DUS 2068  or DUS 2067  Viscosity at 150°C,     
xW-30 grades, (min)  mPa-s 3.5 2.9 
xW-30 grades, (max)  mPa-s N/A 3.2 
xW-40 grades  mPa-s Meet SAE J30  N/A 
DUS 2068 (135°C HTCBT)  Copper, increase, (max)  mg/kg  20 20 
Lead, increase, (max)  mg/kg  120 120 
Copper st rip rating, (max)  _ 3 3 
DUS 2069  Kinematic viscosity after 90 pass shearing, mm2/s at 100°C, (min)  
xW-30 0W -40 mm2/s 9.3 9.3 
Other xW -40 mm2/s 12.5 N/A  
xW-30 0W -40 mm2/s 12.8 9.3 
HTHS viscosity at 150°C, (min) xW -30 
grades3  mm2/s 3.4 2.8 
DUS 204 6 (NOACK)  Evaporative loss at 250°C, (max)  % 13 13 
DUS 2041  Foaming/settling, (max)  
Sequence I  ml 10/0 10/0 
Sequence II  ml 20/0 20/0 
Sequence II Sequence III  ml 10/0 10/0 
DUS 2074  (Sooted oil MRV 
TP-1) (DUS 2070 engine test 
requirement)  Viscosity, 1 80 h used oil sample from T -
11/T-11a test, tested at  
-20°C,  (max)  mPa-s 25000  25000  
Yield stress of 180 h used oil sample 
above,  (max)  Pa <35 <35 
DUS 2067  Mass fraction sulfated ash, (max)  % 1.0 1.0 
DUS 2045  Mass fraction phosphorus,  (max)  % 0.12 0.12 
DUS 2045  Mass fraction sulfur, (max)  % 0.4 0.4 
  
2 © UNBS yyyy– All rights reserved  
 A.2  Requirements for API service category CJ -4 
Table A. 2 — Laboratory test requirements for API CJ -4 service category  
Requirements  Test 
method  Properties  Unit Limits  
1 Test  2 Test  3 Test  
1.1 Visco sity Grades  _ SAE J300  _ Manufacturer specifies 
viscosity target within SAE 
J300 specification  
1.2 High Temperature 
Corrosion, 135oC DUS 2068  Copper, used oil increase, (max) Ppm 20 No MTAC  
 Lead, used oil increase,  (max) ppm 120 
 Copper Strip Rati ng, (max) _ 3 
1.3 Foaming  DUS 2041  Foaming/Settling, (max) No MTAC  
Sequence I  % 10/0 
Sequence II  % 20/0 
Sequence III  % 10/0 
1.4 Shear Stability  DUS 2069  KV @ 100oC after 90 -passes for SAE 
XW-40, (min)  
KV @ 100oC after 90 -passes for SAE 
XW-30, (min) cSt  
 
cSt _ No MTAC  
1.5 Noack Volatility  DUS 2046  Evap Loss @ 250oC, Vis cosity  
Grades other than SAE 10W -30, 
(max) % 13 No MTAC  
 Evap Loss @ 250oC,  
SAE 10W -30, (max) % 15 
1.6 High Temperature/ 
High Shear  DUS 2071  Viscosity @ 150oC, (min) cP 3.5 No MTAC (1), (2) 
1.7 Sooted Oil MRV  DUS 2074  180 hour sample from Mack T -11 or T -11A  No MTAC  
Viscosity @ -20oC, (max) cP 25,000  
Yield stress  Pa <35 
1.8 Chemical Limits 
(Non -Critical)  DUS 2064  Sulfated  Ash, (max) % 1.0 No MTAC (1), (2) 
DUS 2045  Phosphorus,  (max) % 0.12 
Sulfur,  (max) % 0.4 
 
1.9 Seal Compatibility  DUS 2072  
 
Nitrile  Limits  
Volume Change  Hardness  Tensile strength  Elongation  
+5 / -3 7 / -5 7 / -5 +10 / -TMC1006  
Silicone  +TMC1006 / -3 +5 / TMC1006  +5 / -TMC1006  +20 / -30 
Polyacrylate  +5 / -3 +8 / -5 +8 / -5 +10 / -35 
FKM  +5 / -2 +7 / -5 +7 / -5 +10 / -TMC1006  
Vamac G  +TMC1006 / -3 +5 / -TMC1006  +5 / -TMC1006  +10 / -TMC1006  
(1) Not an ACC Test.  
(2) MTAC is a statistical method for treating multiple engine oi l test results if applicable. Consult your sales representative for further information  
 DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  3 
 A.3 Requirements for API service category CL -4 and CL -4 Plus  
Table A. 3 — Laboratory test requirements for API CL -4 and CI-4 PLUS  service category  
Requirements  Test me thod  Properties  Units  Limits  
1 Test  2 Test  3 Test  
1.1 Viscosity 
Grades   SAE J300   Manufacturer specifies viscosity 
target within SAE J300 
specification  
1.2 High 
Temperature  
Corrosion Bench 
Test DUS 2068  Copper increase, (max)  ppm 20 No MTAC (1), (2) 
Lead increase, (max)  ppm 120 
Copper strip rating, (max) (D130)  _ 3 
Tin increase, (max)  ppm report  
1.3 Foam Test  DUS 2041 
(Option A  
not allowed)  Foaming/Settling, (max)  No MTAC (1), (2) 
Sequence I  mL 10/0 
Sequence II  mL 20/0 
Sequenc e III mL 10/0 
1.4 Shear Stability  DUS 2075  After shear viscosity, SAE 10W -
30, (min)  cSt 9.3 No MTAC (1), (2), (3) 
  After shear viscosity, SAE 15W -
40, (min)  cSt 12.5 
1.5 Volatility  DUS 2046 
(Noack)  Evaporative loss at 250oC, (max)  % 15 No MTAC (1), (2 ) 
1.6High 
Temperature 
/High Shear  As allowed in 
SAE J300  Viscosity, (min)  mPa-s 3.5 No MTAC (1), (2) 
1.7 Low 
Temperature 
Pumpability  DUS 2074 
(MRV TP -1) Viscosity of 75h used oil sample 
from T -10 Test at -20oC, (max)  mPa-s 25000  No MTAC (1), (2) 
Modifi ed DUS 
2074  
(if yield stress)  Viscosity at -20oC, (max)  mPa-s 25000   
- 
 Yield stress, (max)  Pa 35 
1.8 Elastomer  
Compatibility  DUS 2072  Limits  
Volume 
Change  Hardness  Tensile strength  Elongation  
Nitrile  +5 / -3 +7 / -5 +10 / -TMC1006  +10 / -TMC1006  
Silicone  +TMC1006 / 
-3 +5 / -TMC1006  +10 / -45 +20 / -30 
Polyacrylate  +5 / -3 +8 / -5 +18 / -15 +10 / -35 
FKM  +5 / -2 +7 / -5 +10 / -TMC1006  +10 / -TMC1006   
4 © UNBS yyyy– All rights reserved  
 (1) Not an ACC Test. . 
 (2) MTAC  is a statistical  method  for treating  multiple  engine  oil test results  if applicable Consult  your sales  representative  for further  information.  
 
 
A.4 Requirements for API service category CH -4 
Table A. 4 — Laboratory test requirements for API CH -4 service category  
Requirements  Test method  Property  Units  Limits  
1 Test  2 Test  3 Test  
 Viscosity Grades   SAE J300   Manufacturer specifies 
viscosity target within SAE 
J300 specification  
 High Temperature  
Corrosion Bench 
Test DUS 2068  Copper increase, (max)  ppm 20 No MTAC (1), (2) 
Lead increase, (max)  ppm 120 
Tin increase, (max)  ppm report  
Copper corrosion rating, (max) 
(D130)  - 3 
Foam Test  DUS 2041 (Option 
A not allowed)  Foaming/Settling, (max)  
 
 No MTAC  
Sequence I, (max )  
 mL 10/0 
 Sequence II, (max )  
 mL 20/0 
 Sequence III, (max)  mL 10/0 
Shear Stability  DUS 2075  After shear viscosity SAE 10W -
30, (min)  cSt 9.3 No MTAC (1), (2) 
After shear viscosity SAE 15W -
40, (min)  cSt 12.5 
Volatility  DUS 2046  Noack (SAE 10W -30) % 
loss 20 No MTAC (1), (2) 
Noack (SAE 15W -40) % 
loss 18 
DUS 2073 or 
  GCD (SAE 10W -30) 
 
GCD (SAE 15W -40) % 
loss 
% 
loss 17 
 
15 
(1) Not an ACC Test. . 
 (2) MTAC  is a statistical  method  for treating  multiple  engine  oil test results  if applicable Consult  your sales  representative  for further  information  
 
 DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  5 
 Annex  B 
(normative ) 
 
CH- 4 Multiple Test Programs  
B.1 CH- 4 Multiple Test Programs  
B.1  For the CH - 4 test parameters on which outlier criteria apply (as shown in table A. 4), if three or more 
tests are run, one complete test ca n be discarded if the outlier criteria defined in practice ASTM E178 are met 
at a significance level of 5%. Since the criteria are based upon the number of tests in the program, each 
program is unique.  
B.2 Section 6 (Recommended Criteria for Known Standard  Deviation) of practice ASTM E178 is used to 
determine outliers. The standard deviation applied for each parameter is shown in table B.1.  
Table B.1  Outlier Test Determination Values  
Test parameter  Estimate of standard deviation  
1P- WDP   57.6 
1P- TGC  7.74 
1P- TLC 13.15  
1P- AOC  0.3238 Natural log transform  
1P- FOC  0.5177 natural log transform  
1K- WDK  35.6 
1K- TGF 15.7 
1K- TLHC  1.1 (Ln TLHC +1)  
1K- AOC  0.145  
T-9 ALW  2.35 
T-9 TRWL  29.29  
T-9 EOT ∆Pb 1.203  
T-10-CLW  4.2 
T-10- TRWL  18 
T-10-EOT ∆Pb 0.2339  
RFWT - APW  0.04 
M11- XHEAD WEAR  2.2 
M11- OFDP  0.3270  
M1- SLUDGE  0.27 
T-8E- VISCOSITY REL at 4.8% SOOT  0.15 
T-8E VISCOSITY INCREASE AT 3.8% SOOT  0.93 
ISM- Crosshead wear  0.6 
ISM-OFDP  0.4227  
ISM SLUDGE  0.2 
  
6 © UNBS yyyy– All rights reserved  
 B.2  Multiple test acceptance criteria  
Multiple Test Acceptance Criteria (MTAC), is any data -based approach for evaluation of the quality and 
performance of a formulation where more than one test may be run. Generally for a candidate tested once, 
test data for each criterion shall be a pass. F or a candidate tested twice, the mean (average) value of each 
result shall be a pass. For a candidate tested three or more times, one test might be declared an outlier and 
thus discarded and the mean (average) value of retained test data for each result sh all be a pass. Data are 
rounded in accordance with the procedures specified in Practice E29.  
For the Sequence IIIF, Sequence IIIG, and EOAT tests as used the only requirement for declaring an outlier is 
that three or more tests have been run.  DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  7 
 Annex C  
(info rmative)  
 
Current and Obsolete engine oil Categories for compression ignition 
engine applications  
C.1 API Categories  
Table C.1 —Table showing current and Obsolete API Categories of Engine oil  
Category  Status  Service  Backward Compatibility  
CK-4 Current  API Service Category CK -4 describes oils for 
use in high -speed four -stroke cycle diesel 
engines designed to meet 2017 model year on -
highway and Tier 4 non -road exhaust emission 
standards as well as for previous model year 
diesel engines. These oils are formul ated for 
use in all applications with diesel fuels ranging 
in sulfur content up to 500 ppm (0.05% by 
weight). However, the use of these oils with 
greater than 15 ppm (0.0015% by weight) sulfur 
fuel may impact exhaust after  treatment system 
durability and/o r oil drain interval. These oils are 
especially effective at sustaining emission 
control system durability where particulate filters 
and other advanced after  treatment systems are 
used. API CK -4 oils are designed to provide 
enhanced protection against oil oxidation, 
viscosity loss due to shear, and oil aeration as 
well as protection against catalyst poisoning, 
particulate filter blocking, engine wear, piston 
deposits, degradation of low - and high -
temperature properties, and soot -related 
viscosity increase. API CK -4 oils exceed the 
performance criteria of API CJ -4, CI -4 with CI -4 
PLUS, CI -4, and CH -4 and can effectively 
lubricate engines calling for those API Service 
Categories. When using CK -4 oil with higher 
than 15 ppm sulfur fuel, consult the engine 
manuf acturer for service interval 
recommendations . CJ-4, CI -4, CI -4 PLUS, CI -4, and CH -4  
FA-4 Current  API Service Category FA -4 describes certain 
XW-30 oils specifically formulated for use in 
select high -speed four -stroke cycle diesel 
engines designed to meet  2017 model year on -
highway greenhouse gas (GHG) emission 
standards. These oils are formulated for use in 
on-highway applications with diesel fuel sulfur 
content up to 15 ppm (0.0015% by weight). 
Refer to individual engine manufacturer 
recommendations rega rding compatibility with 
API FA -4 oils. These oils are blended to a high 
temperature high shear (HTHS) viscosity range 
of 2.9cP –3.2cP to assist in reducing GHG 
emissions. These oils are especially effective at 
sustaining emission control system durability 
where particulate filters and other advanced Not Backward Compatibl e  
8 © UNBS yyyy– All rights reserved  
 aftertreatment systems are used. API FA -4 oils 
are designed to provide enhanced protection 
against oil oxidation, viscosity loss due to shear, 
and oil aeration as well as protection against 
catalyst poisoning, p articulate filter blocking, 
engine wear, piston deposits, degradation of 
low- and high -temperature properties, and soot -
related viscosity increase. API FA -4 oils are not 
interchangeable or backward compatible with 
API CK -4, CJ -4, CI -4 with CI -4 PLUS, CI -4, and 
CH-4 oils. Refer to engine manufacturer 
recommendations to determine if API FA -4 oils 
are suitable for use. API FA -4 oils are not 
recommended for use with fuels having greater 
than 15 ppm sulfur. For fuels with sulfur content 
greater than 15 ppm, refe r to engine 
manufacturer recommendations . 
CJ-4 Current  For high -speed four -stroke cycle diesel engines 
designed to meet 2010 model year on -highway 
as well as for previous model year diesel 
engines. These oils are  formulated for us e in all 
applications with diesel fuels ranging in sulfur 
content up to 500 ppm (0.05% by  weight). 
However, the use of these oils with greater than 
15 ppm (0.0015% by weight) sulfur fuel may 
impact  exhaust after  treatment system durability 
and/or drain int erval. CJ -4 oils are especially 
effective at sustaining  emission control system 
durability where particulate filters and other 
advanced after  treatment systems are  used. 
Optimum protection is provided for control of 
catalyst poisoning, particulate filter b locking, 
engine  wear, piston deposits, low - and high -
temperature stability, soot handling properties, 
oxidative thickening,  foaming, and viscosity loss 
due to shear. API CJ -4 oils exceed the 
performance criteria of API CI -4 with CI -4 
PLUS, CI -4, CH -4, CG -4 and CF -4 and can 
effectively lubricate engines calling for those 
API Service Categories.  
When using CJ -4 oil with higher than 15 ppm 
sulfur fuel, consult the engine manufacturer for 
service interval.  CI-4 and CI -4 Plus  
CI-4 Plus  Current  Meets all requir ements of CI -4 but includes 
increased resistance to oil thickening from soot 
and increased shear stability.  CD, CE, CF -4, CG -4 and CH -4 
CI-4 Current  Introduced in 2002. For high -speed, four -stroke 
engines designed to meet 2004 exhaust 
emission standards  implemented in 2002. CI -4 
oils are formulated to sustain engine durability 
where exhaust gas recirculation  
(EGR) is used and are intended for use with 
diesel fuels ranging in sulfur content up to 0.5% 
weight. Can  be used in place of CD, CE, CF -4, 
CG-4, and  CH-4 oils. Some CI -4 oils may also 
qualify for the CI -4 PLUS  designation.  CD, CE, CF -4, CG -4 and CH -4 
CH-4 Current  Introduced in 1998. For high -speed, four -stroke 
engines designed to meet 1998 exhaust 
emission standards.  
CH-4 oils are specifically compo unded for use 
with diesel fuels ranging in sulfur content up to CD, CE, CF -4 and CG -4 DUS  249-3:yyyy  
© UNBS yyyy – All rights reserved  9 
 0.5% weight.  
Can be used in place of CD, CE, CF -4, and CG -
4 oils.  
CG-4 Obsolete  Introduced in 1995. For severe duty, high -
speed, four -stroke engines using fuel with less  
than 0.5% weight  sulfur. CG -4 oils are required 
for engines meeting 1994 emission standards. 
Can be used in place of CD,  CE, and CF -4 oils.  CD, CE and CF -4 
  
Obsolete    
CF-2  
Obsolete  Introduced in 1994. For severe duty, two -stroke -
cycle engines. Can be  used in place of CD -II 
oils. CD-II 
Does not necessarily meet the 
requirements of CF or CF -4 oils.  
CF  
Obsolete  Introduced in 1994. For off -road, indirect -
injected and other diesel engines including 
those using fuel with  over 0.5% weight sulfur. 
Can be us ed in place of CD oils.  CD 
CF-4  
Obsolete  Introduced in 1990. For high -speed, four -stroke, 
naturally aspirated and turbocharged engines. 
Can be used  in place of CD and CE oils.  CD and CE  
CE Obsolete  Introduced in 1985. For high -speed, four -stroke, 
natur ally aspirated and turbocharged engines. 
Can be used  in place of CC and CD oils.  __ 
CD-II Obsolete  Introduced in 1985. For two -stroke cycle 
engines.  __ 
CD Obsolete  Introduced in 1955. For certain naturally 
aspirated and turbocharged engines.  __ 
CC  Obsolete  CAUTION:  Not suitable for use in diesel -
powered engines built after 1990.  __ 
CB Obsolete  CAUTION:  Not suitable for use in diesel -
powered engines built after 1961.  __ 
CA Obsolete  CAUTION:  Not suitable for use in diesel -
powered engines built after  1959.  __ 
  
10 © UNBS yyyy– All rights reserved  
 Bibliography  
[1] SAE J300, Engine oil viscosity classification.  
[2] ACEA European Oil Sequences 2012. Service fill oils for Gasoline engines, light duty diesel engines, 
engines with after treatment devices and heavy duty engine oils  
[3] API 150 9, Engine oil licensing and certification system.  
[4] ASTM D4485 Standard Specification for Performance of Active API Service Category Engine Oils  
[5] SANS 1517:2005 High Performance engine lubricating oil for diesel engines (for API Service Category 
CH- 4) 
[6] DUS249:2000/EAS 159, Specification for engine oil, 
 DUS  249-3: yyyy  
© UNBS yyyy – All rights reserved  11 
 Certification marking  
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The use of the UNBS Certi fication Mark is governed by the Standards Act, and the Regulations made 
thereunder. This mark can be used only by those licensed under the certification mark scheme operated by 
the Uganda National Bureau of Standards and in conjunction with the relevant U ganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requirements of that standard under a system of supervision, control and testing in accordance with the 
certification mark sch eme of the Uganda National Bureau of Standards. UNBS marked products are 
continually checked by UNBS for conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of  Standards.  
 
 DUS 249-3: yyyy    
 
ICS nn.nnn.nn  
Price based on nn pages  
© UNBS yyyy– All rights reserved