COMMIITTEE DRAFT UGANDA 
STANDARD  
  CDUS 249 -2 
Second Edition  
2018 -mm-dd 
 
 
 Reference number  
CDUS 249 -2: 201 8 
© UN BS 201 8  
  
Engine Oil  — Performance Classification — Part 2: API 
Specification for Spark Ignition (petrol) engines  
 CDUS 249-2: 2018  
ii                © UNBS 2018 – All rights reserved  
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport 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, electronic or mechanical, includ ing 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 4 333 250/1/2/3  
Fax: +256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  CDUS 249 -2:201 8 
© UNBS 2018 – All rights reserved                 iii 
  Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  2 
4 Abbreviated terms  ................................ ................................ ................................ ................................ . 3 
5 Classification  ................................ ................................ ................................ ................................ .........  3 
5.1 Classification according to vi scosity  ................................ ................................ ................................ .. 3 
5.2 Classification according to performance ................................ ................................ ............................  3 
6 Requirements  ................................ ................................ ................................ ................................ .........  3 
6.1 General requirements  ................................ ................................ ................................ ...........................  3 
6.1.1  Stability  ................................ ................................ ................................ ................................ ...................  3 
6.1.2  Compatibility  ................................ ................................ ................................ ................................ ..........  3 
6.2 Physico -Chemical Requirements  ................................ ................................ ................................ ........  4 
6.3 Viscosity Grades  ................................ ................................ ................................ ................................ ... 6 
6.4 Performance Categories  ................................ ................................ ................................ .......................  8 
6.5 Test requirements  ................................ ................................ ................................ ................................ . 8 
7  Packaging and Labelling  ................................ ................................ ................................ ......................  8 
7.1 Packaging  ................................ ................................ ................................ ................................ ...............  8 
7.2 Labelling  ................................ ................................ ................................ ................................ .................  8 
8 Sampling  ................................ ................................ ................................ ................................ ................  9 
Annex A (normative)  Laboratory/bench  test requirements  ................................ ................................ ....... 10 
A.1 API service category SN  ................................ ................................ ................................ .....................  10 
A.2 API service category SM  ................................ ................................ ................................ .....................  13 
A.3 API service category SJ AND SL  ................................ ................................ ................................ ....... 14 
Annex  B (informative)  Current and Obsolete Categories of Spark Ignition Application Engine 
Oils ................................ ................................ ................................ ................................ ........................  16 
B.1 API Categories  ................................ ................................ ................................ ................................ ..... 16 
Bibliography  ................................ ................................ ................................ ................................ ......................  17 
 CDUS 249-2: 2018  
iv                © UNBS 2018 – All rights reserved  
 Foreword  
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 Alim entarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT  Agreement  of the World Trade Organisation (WTO).  
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to delib erate on standards in a given field or area and consists of key stakeholders 
including government, academia, consumer groups, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to s takeholders 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 T echnical Committee UNBS /TC 16, [Petroleum Products and 
facilities ], Subcommittee SC 1, [Petroleum and Petrochemicals ]. 
This second edition cancels and replaces the first edition ( US 249-2000 ), which has been technically revised.  
US 249  consists of the fol lowing parts, under the general title Engine oil — Performance specification :  
   Part 1: General  
 — Part 2: API Specification for spark Ignition (petrol) Engines  
 — Part 3: API Specification for Compression Ignition (diesel) Engines  
 — Part 4: Specification for internal combustion engine oils used in four stroke -cycle motorcycle 
gasoline engines and associated drive trains  
 — Part 5: Specification for internal combustion engine oils used in two stroke -cycle motorcycle 
gasoline engines and associated drive trai ns CDUS 249 -2:201 8 
© UNBS 2018 – All rights reserved                 v 
  Introduction  
Due to the technological advances  that have occurred since the publishment of US 249:2000/ EAS 159, 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 Cla ssifications — Part 1: General  
DUS 249 -2:2017, Engine Oils — Performance Classifications — Part 2: API Specification for Spark Ignition 
(petrol) Engines  
DUS 249 -3: 2017, Engine Oil — Performance Classification — Part 3: API Specification for light and heavy 
duty compression Ignition (diesel) engines  
DUS 249 - 4: 2017, 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 -5: 2017 Engine Oils — Performance Classification — Part 5: Specification for Internal Combustion 
engine oils used in two -stroke cycle motorcycle gasoline engines and associated drive tra ins  
This standard outlines the performance classifications as applicable to API Oil sequences  
Note: Current engine o il categories that may be deemed  obsolete by API during the course of the 
application of this standard shall be considered obsolete as well . 
 COMMIITEE DRAFT UGANDA STANDARD  CDUS 249 -2: 201 8 
 
1 
© UNBS 2018 – All rights reserved  Engine Oil  — Performance Classification  — Part 2: API 
Specification for Spark Ignition (petrol) engines  
1 Scope  
This Draft Uganda Standard specifies performance requirements , sampling  and test methods  for spark  ignition 
engine oil  of passenger cars, l ight duty trucks, vans and related equipment meeting or e xceeding API service 
category SJ. 
It does not cover engine oil for compression ignition engines, aviation equipment, outboard motors, lawn 
mowers, railroad locomotives or ocean going vessels.  
2 Norm ative references  
The following referenced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced 
document (including any amendmen ts) applies.  
DUS 2040  Standard test method for flash and fire points by Cleveland open cup tester . 
US 1730:2017  Standard test method for pour point of petroleum products  
US 1732:2017, Standard practice for manual sampling of petroleum and petroleum product s 
US 1733:2017, Standard practice for automatic sampling of petroleum and petroleum products  
US ISO 3104:1994  Standard test method for kinematic viscosity of transparent and opaque liquids (the 
calculation of dynamic viscosity  
DUS 2041  Standard test method  for foaming characteristics of lubricating oils  
DUS 2042  Standard practice for calculating viscosity index from kinematic viscosity at 40 and 100 °C . 
DUS 2043  Standard Test Method for Measuring Viscosity of New and Used Engine Oils at High Shear Rate 
and High Temperature by Tapered Bearing Simulator Viscometer at 150 °C  
DUS 2044  Standard test method for determination of yield stress and apparent viscosity of engine oils at low 
temperature.  
US 2045  Standard test method for determination of additive elements  in lubricating oils by inductively coupled 
plasma atomic emission spectrometry . 
DUS 2046  Standard test method for evaporation loss of lubricating oils by the Noack method.  
DUS 2047  Standard test method for high temperature foaming characteristics of lubri cating oils . 
DUS 2048  Standard test method for determination of high temperature deposits by thermos oxidation engine 
oil simulation test.  
DUS 2049  Standard Test Method for Estimation of Engine Oil Volatility by Capillary Gas Chromatography    
2                © UNBS 2018 – All rights reserved  
 DUS 2050 Stand ard Test Method for Evaluation of Rust Preventive Characteristics of Automotive Engine Oils  
DUS 2051  Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation 
in a Spark -Ignition Internal Combustion Engine Fuelled wi th Gasoline and Operated Under Low -Temperature, 
Light -Duty Conditions  
DUS 2052  Standard test method for measuring the effect on filterability of engine oils after treatment with 
various amounts of water and a long (6 -h) heating time . 
DUS 2052  Standard Test  Method for Measuring the Effect on Filterability of Engine Oils After Treatment with 
Water and Dry Ice and a Short (30 min) Heating Time  
DUS 2056 Standard Test Method for Appar ent Viscosity of Engine Oils and Base Stocks Between –10 °C and 
–35 °C Using Cold -Cranking Simulator  
DUS 2057 Standard Test Method for Low Temperature, Low Shear Rate, Viscosity/Temperature Dependence 
of Lubricating Oils Using a Temperature -Scanning Techni que 
DUS 2053  Standard test method for the determination of homogeneity and miscibility in automotive engine 
oils. 
DUS 2054  Standard Test Method for Determination of Moderately High Temperature Piston Deposits by 
Thermo -Oxidation Engine Oil Simulation Test -TEOST MHT  
DUS 2058 Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X -ray 
Fluorescence Spectrometry  
DUS 2055  Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIG, Spark -
Ignition Engine  
DUS 2059 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers —Tension  
DUS 2060 Standard Test Method for Rubber Property —Effect of Liquids  
DUS 2061 Standard Test Method for Rubber Property —Durometer Hardness  
DUS 2062 Standard Test Method for Evalua tion of the Ability of Engine Oil to Emulsify Water and Simulated 
Ed85 Fuel  
DUS 2063 Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with 
Water and Dry Ice and a Short (30 min) Heating Time  
DUS 2064 Standard Te st Method for Multielement Determination of Used and Unused Lubricating Oils and 
Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP -AES)  
DUS 2065 Standard Test Method for Bench Oxidation of Engine Oils by ROBO Apparatus  
DUS 2066 Standard Practice for Utilization of Test Data to Determine Conformance with Specifications  
DUS 249 -1:2018  Engine Oil - Performance Classification - Part 1 - General  
3 Terms and definitions  
For the purposes of this standard, the terms and definitions  given in DUS 249 -1:2018  and the following apply . 
3.1 
energy conserving category  
the group of engine oils that have demonstrated fuel economy benefits and are intended primarily for use in 
automotive gasoline engine applications, such as passenger cars, light - duty tr ucks and vans.   
© UNBS 2018 – All rights reserved                 3 
  3.2  
Resource conserving category  
the group of engine oils that have demonstrated fuel economy benefits, emission system and turbo charger 
protection and compatibility with ethanol containing fuel up to E85 and are intended primarily for use  in spark 
ignition engines  such as passenger cars, light - duty trucks and vans.  
3.3  
tamper proof seal  
a seal designed such that malicious disassembly and reassembly using commonly available tools will be 
detected upon visual inspection  
4 Abbreviated term s 
4.1  
EELQMS  
European Engine Lubricants Quality Management System.  
4.2  
EOLCS  
Engine Oil Licensing and Certification System  
5 Classification  
Engine lubricating oils shall be classified according to viscosity  grade  and performance  
5.1 Classification accord ing to viscosity  
The viscosity of the lubricating oil shall be classified as either single grade or multi -grade basing on the SAE 
viscosity grades , as per designations indicated in SAE J300 _201501  
5.2 Classification according to perfo rmance  
Engine lubricat ing oil shall be classified according to pe rformance based on API performance classification  
6 Requirements  
6.1 General requirements  
The engine oil shall consist of acceptable petroleum products, or of acceptable synthetically prepared 
products, or of a c ombination of these two types of products, compounded in all cases, with such functional 
additives, for example, detergents, dispersants, oxidation inhibitors and corrosion inhibitors as are necessary 
to enable it to comply with the other requirements of t his standard . 
6.1.1  Stability  
When tested in accordance with DUS 2053 , the engine oil shall remain clear and homogeneous, and shall 
show no evidence 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   
4                © UNBS 2018 – All rights reserved  
 6.1.3.1  All products licensed under API shall be listed in API EOLCS licensee directory (www.a pi.org) and 
shall bear appropriate labelling as described in 7.2 in addition to the API Engine oil quality marks  
6.1.3. 2 The Uganda National Bureau of Standard shall be notified of any changes in the formulation of 
engine oil and an API warranty certificat e shall be produced as evidence before a new spec can be taken for 
reference purposes  
6.2 Physico -Chemical Requirements  
6.2.1 The oil shall be free from suspended matter,  grit, water or any other foreign matter and impurities.  
6.2.2  The oil shall comply w ith the physico -chemical  requirements as in table 1 and other bench -test 
requirements as specified in this standard  
  
© UNBS 2018 – All rights reserved                 5 
  Table 1 — Requirements for Physico -Chemical (other than viscosity)  
No. Characteristics  Requirement for Grade  
  SAE 
0W 
 SAE 
5W 
 SAE 
10W 
 SAE 
15W 
 SAE 
20W 
 SAE 
25W 
 SAE 
20 
 SAE 
30 
 SAE 
40 
 SAE 
50 
 SAE 
60 
 Multi - 
Grade  
 Method of Test  
1 Appearance  When examined in transmitted light in a colourless test tube of 25mm internal diameter, oil shall be clear, bright and free f rom turbidity and 
sediments.  
2 Viscosity index, (Min) 100 100 100 95 95 95 95 95 90 90 90 _ DUS 2042  
3 Pour point, 0C, (Ma)x -33 -33 -27 -24 -21 -15 -9 -6 -6 -6 6 _ US 1730:2017  
4 Flash point COC 0C, 
(Min) 160 160 190 190 200 200 200 215 215 220 220 200  
or 185  DUS 2040  
5 Evaporative loss, %, 
(Max) 2+-0 20 20 25 25 15 15 10 10 10 10 22 or 20  DUS 2046  
NOTE 1  For defence requirements pour point for SAE 40 shall be -180C, Max and for SAE 50 shall be -90C 
NOTE 2  Flash point for multi  grade is valid only for 0W -20, 5W -20, 5W -30, 10W-30 and for other multi  grades it is not required  
NOTE 3  Evaporation loss for SAE 0W -20, 5W -20, 5W -20, 5W -30, 10W -30 is 22 and for SAE 15W -40 it is 20  
 
   
6                © UNBS 2018 – All rights reserved  
 6.3 Viscosity Grades  
6.3.1  The oils shall conform to one of 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 Table 2.  
6.3.2  In case of multi -grades, the prescribed viscosity limits for both the constituent components of the 
multi -grade, shall be met . 
  
© UNBS 2018 – All rights reserved                 7 
  Table 2 — Engine oil viscosity classification  
SAE  
Viscosity  
grade  Low –temperature  
(oC) Cranking  
Viscosity ,  mPa.s,  
(Max)a Low temperature  
(oC) Pumping  
Viscosity , mPa.s  
with no yield stress  
(Max)b Low-Shear -Rate Kinematic  
Viscosity  (mm2/s) at 100 OCc High -shear -Rate Viscosity  mPa.s  
at 150 oC  and 106 Sd 
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 - - 
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 2044  
C test method to be us ed is US ISO 3104:1994  
d test method to be used is DUS 2043   
8                © UNBS 2018 – All rights reserved  
 6.4 Performance Categories  
Candidate engine oils shall be formulated such that their engine oil specifications be of a quality level least 
equivalent to one of the performance categories for eng ine oil sequence given in Table 3.  
Table 3 — Engine oil performance categories  
Sequence  Performance Categories  
API  SJ SL, SM, SN  
NOTE:  The consumer shall refer to the owner’s or operator’s manual for recommended category of engine oil to be 
used in a s pecific engine  
6.4.1  Lubricants labelled or used as spark ignition engine oils under the API sequence shall have a 
performance not lower than that defined by API SJ 
6.4.2  API c ategories,  SL SM, SN which exceed the performance  requirements of SJ, also meet the 
requirements of this standard.  
6.5 Test requirements  
All engine oil licensed under the API sequence in addition to meeting the requirements stipulated in clause 6 
above, shall comply with laboratory tests requirements as specified in Annex A  
7  Packag ing 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 detrimental 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, containers shall be firmly secured with a tamper -proof seal.  
7.2 Labelling  
Each container and each carton (if present) shall be le gibly and indelibly marked with the following i nformation 
in English  language.  
1. product name for single performance engine oil ‘Petrol Engine Oil’  
2. name and address of the manufacturer and registered trade mark if any and/or distributor’s name;  
3. category of oils according to API  
4. API engine oil quality mark  
5. SAE viscosity grade;  
6. net content.  
7. origin of the product/Made in.  
8. date of production and the batch number   
© UNBS 2018 – All rights reserved                 9 
  8 Sampling  
The relevant sampling procedure given  in US 1733:2017 or in DUS 1732:2017  shall be used to provide 
samples for testing  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
10                © UNBS 2018 – All rights reserved  
 Annex A  
(normative ) 
 
Laboratory/bench  test requirements  
A.1 API service category SN  
Table A.1 — Laboratory /bench  test requirements for API SN service  category  
Requirements  Test Method  Properties  Units  Limits  
1.LABORATORY/BENCH TESTS  
Viscosity Grades  SAE J300  All those  that apply,  typically  SAE 0W-20, 0W-30, 
5W-20, 5W -30 and  10W-30 Manufacturer sets targets 
within SAE J300 specification   
Foam Tests  DUS 2041 , Option A  
 
 Sequence I, tendency/stability(11), (12), (max)  ml 10/0 
Sequence II, tendency/stability (11), (12), (max)  ml 50/0 
Sequence III, tendency/stability(11), (12), (max)  ml 10/0 
DUS 2047 , Option A  Sequence IV, tendency/stability) (11), (max)  ml 100/0  
EOFT  DUS 2052  Filterability, (max)  % flow reduction  50 
EOWTT  DUS 2063  Filterability with 0.6%  Water, (max)  % flow reduction  50 
Filterability with 1.0%  Water, (max)  % flow reduction  50 
Filterability with 2.0%, (max)  % flow reduct ion 50 
Water Filterability with 3.0%  Water, (max)  % flow reduction  50 
Aged Oil  Low-Temperature 
Pumpability  DUS 2044  MRV TP -1 Apparent Viscosity and Yield Stress  cP and Pa  <60,000 cP with no yield stress (16) (17) 
TEOST 33C  DUS 2048  High temperature de posits, (max)  total deposit weight, mg  30 (1), (2), (15)  
TEOST MHT (9) DUS 2054  High temperature deposits, (max0  deposit weight, mg  35  (3) 
Emulsion retention  DUS 2062  Oil mixed with 10% Water and 10% E85  0˚C and 25˚C @ 24 hours  No water separation (2), (15)  
© UNBS 2018 – All rights reserved                 11 
  Homogeneity & Miscibility  DUS 2053  Oil Compatibility  None  Pass (13) 
Gelation Index (5) DUS 2054  Scanning Brookfield Viscosity, Yield Stress, , (max)  Calculated  12 (2), (14)  
Volatility  DUS 2046  Evaporation Loss (Noack), (max)  % off @ 250˚C  15 (8) 
DUS 2049  Simulated distillation (GCD), (max)  % off @ 371˚C  10 
Ball Rust Test (5) DUS 2050  Rust rating, (min)  Average Gray Value  100 
Elastomer compatibility   
Polyacrylate Rubber ACM -1 
(SAE J2643)  DUS 2060  Volume  % change  -5,9 
DUS 2061  Hardness  pts -10,10 
DUS 2059  Tensile strength  % change  -40,40  
Hydrogenated Nitrile HNBR -1 
(SAE J2643)  DUS 2060  Volume  % change  -5,10 
DUS 2061  Hardness  pts -10,5 
DUS 2059  Tensile strength  % change  -20,15  
Silicone Rubber VMQ -1 (SAE 
J2643)  DUS 2060  Volume  % change  -5,40 
DUS 2061  Hardness  Pts -30,10  
DUS 2059  Tensile strength  % change  -50,5 
Fluorocarbon Rubber FKM-1 
(SAE J2643)  DUS 2060  Volume  % change  -2,3 
DUS 2061  Hardness  pts -6,6 
DUS 2059  Tensile strength  % change  -65,10  
Ethylene Acrylic Rubber AEM-1 
(SAE J2643)  DUS 2060  Volume  % change  -5,30 
DUS 2061  Hardness  pts -20,10  
DUS 2059  Tensile strength  % change  -30,30  
Phosphorus (9) DUS 2045  Phosphorus content, (min)  % 0.06 (10) 
Phosphorus (9) DUS 2045  Phosphorus content, , (max)  % 0.08  (4), (10)  
Sulfur (9) DUS 2045  Sulfur content of SAE 0W and 5W multi grades, , 
(max)  % 0.5  (4), (10)  
Sulfur (9) DUS 2058  Sulfur content of SAE 10W multi grades, 
(max),max  % 0.6  (4), (10)   
12                © UNBS 2018 – All rights reserved  
 NOTE 1 If CCS viscosity measured is less than or equal to the maximum CCS vi scosity specified for the original  viscosity grade, run DUS 2044  at the low -
temperature pumping viscosity temperature specified in SAE J300 for the original viscosity grade.  
NOTE 2 If CCS viscosity measured is higher than the maximum CCS viscosity specifie d for the original viscosity g rade in SAE J300, run DUS 2044  at 5°C higher 
temperature . 
(1)Not required for SAE 0W -20. 
(2)Not required for SN Non -ILSAC GF -5 viscosity grades  
(3)45 max for SN Non -ILSAC GF -5 viscosity grades.  
(4)No maximum for SN Non -ILSAC GF-5 viscosity grades.  
 (8)Calculated con versions specified in DUS 2046  are allowed.  
(9)For all viscosity grades: If API CH -4, CI -4 and/or CJ -4 categories precede the “S” category and there is no API Certification Mark, the “S” category limits for phosphor us, sulfur, and the 
TEOST MHT do not apply. However, the CJ -4 limits for phosphorus and sulfur do apply for CJ -4 oils.  
(10)This is a non -critical specification as described in  DUS 2066 . 
(11)After 1 -minute settling period for all ILSAC viscosity grades and all SN -RC oils.  
(12)After 10 -minute settling period for non -ILSAC GF -5 viscosity grades which are not SN -RC. 
(13)Shall remain homogeneous and, when mixed with ASTM reference oils, shall remain miscible.  
(14)To be evaluated from –5˚C to temperature at which  40,000 cP is attained or –40˚C, or 2 Celsius degrees below the appropriate MRV TP -1 temperature (defined by SAE J300), 
whichever occurs first.  
(15)Not Required for SN ILSAC GF -5 viscosity grades which do not also contain the API Certification Mark or are not SN -RC. 
(16)The aged oil is an end -of-test sample generated either in the  Sequence IIIGA test (DUS 2055 ) or the ROBO test ( DUS 2065 ). 
(17)The tem perature at which the DUS 2044  (MRV TP -1) test is conducted is determined by first measuring the low -tempera ture cranking viscosity (CCS) of the aged oil sample at the 
temperature corresponding to the original viscosity grade in SAE J300.  
 
 
 
  
© UNBS 2018 – All rights reserved                 13 
  A.2 API service category SM  
Table A.2 — Laboratory/bench test  requirements  for API SM category  
1. LABORATORY/BENCH TEST S 
1.1 Viscosity Grades  SAE J300  All those that apply, typically SAE 0W -20, 
0W-30, 5W -20, 5W -30 and 10W -30.  Manufacturer sets targets  
within SAE J300 specification  
1.2 Foam Test  DUS 2041  
(Option A)  Sequence I, tendency/stability (1) ml initial  
Foam/ml  
after settling  10/0 max  
Sequence II, tendency/stability (1) 50/0 max  
Sequence III, tendency/stability (1) 10/0 max  
DUS 2047  Sequence IV, tendency/stability (2) 100/0 max  
1.3 Phosphorus  DUS 2045  Phosphorus content  % 0.06 min  
0.08 max (3) 
1.4 EOFT  DUS 2052  0.6% Water - with dry ice - % reduction in flow  % reduction  50 max  
1.5 EOWTT  DUS 2063  with 0.6% Water  % reduction  50 max  
with 1.0% Water  % reduction  50 max  
with 2.0% Water  % reduction  50 max  
with 3.0% Water  % reduction  50 max  
1.6 TEOST (MHT4)  DUS 2054  Total Deposits  mg 35 max (4) 
1.7 Homogeneity & Miscibility  DUS 2053  Oil Compatibilty   pass (5) 
1.8 Gelation Index (6) DUS 2054  Scanning Brookfield Viscosity, Yield Stress  Calculated  12 max (7) 
1.9 Volatility  DUS 2046  Volatility (No ack) % off @ 250˚C  15 max  
DUS 2049  Volatility (GCD)  % off @ 371˚C  10 max  
1.10 Ball Rust Test (6) DUS 2050  Rust rating  Avg Gray Value  100 min  
1.11 Sulfur  DUS 2045  or Sulfur content of SAE 0W and 5W multigrades  % 0.5 max (3) 
DUS 2058  Sulfur content of SAE 10W multigrades  % 0.7 max (3) 
1.12 Aged Oil Low -Temperature  
Pumpability (3) DUS 2044  MRV TP -1 Apparent Viscosity and Yield Stress  cP and Pa  <60,000 cP with no  
yield stress (8) (9)  
14                © UNBS 2018 – All rights reserved  
 (1) Stability after 10 -minute settling period.  
(2) Stability after 1 -minute settling period.  
(3) Not required for non -ILSAC GF -4 viscosity grades.  
(4) 45 max for non -ILSAC GF -4 viscosity grades.  
(5) Shall remain homogeneous and, when mixed with ASTM reference oils, shall remain miscible.  
(6) If API CI -4 and/or CJ -4 categori es precede the“S” category and there is no API Certification M ark, the Sequence VG (DUS 2051), Ball Rust (DUS 2050 ), and Gelation Index (DUS 2057 ) tests are not required.  
(7) To be evaluated from –5˚C to temperature at which 40,000 cP is attained or –40˚C,  or 2 Celsius degrees below the appropriate MRV TP -1 temperature (defined by SAE J300), whichever occurs first.  
(8) The aged oil is an end -of-test sample generated  in the Sequence IIIGA test (DUS 2055 ). 
(9) The DUS 2044  (MRV TP -1) test is conducted at the  original SAE J300 viscosity grade temperature if the measured CCS viscosity is less than or equal to the original viscosity g rade maximum; and at 5°C higher 
temperature otherwise.  
 
 
 
A.3 API service category SJ AND SL  
Table A.3 — Laboratory /bench  test requirements  for API SJ and SL category  
Requirements  Test Properties  Units  Limits  
 SJ SL 
1 Laboratory/bench Tests    
Viscosity Grades   All those that apply, typically SAE 0W -20, 0W -30, 
5W-30 and 10W -30.  Manufacturer sets targets within SAE J300 
specifica tion 
Foam Test  DUS 2041  Sequence I, (max)   
ml initial Foam / ml 
after settling  10/0 10/0 
Sequence II, (max)   50/0 50/0 
Sequence III , (max)  10/0 10/0 
Sequence IV, (max)  200/50  100/0  
Phosphorus  DUS 2045  or 
DUS 2064  Phosphorus Content, (max)   % 0.10 0.10  (1)  
© UNBS 2018 – All rights reserved                 15 
  EOFT  DUS 2052  0.6% Water - with dry ice - % reduction in flow, 
(max)  % 50 50 
EOWTT  DUS 2063  0.6% Water - without dry ice - % rate of change  , 
(max)  % Report  50 
1.0% Water - without dry ice - % rate of change  , 
(max)  % Report  50 
2.0% Water  - without  dry ice - % rate of change (max)  % Report  50  
3.0% Water  - without  dry ice - % rate of change  (max)  % Report  50  
TEOST  DUS 2048  Total Deposits,  (max)  mg 60 NR 
TEOST (MHT4)  DUS 2054  Total Deposits, (max)  mg NR 45 
Homogeneity and Miscibility  DUS 2053  Oil Compatibility  - pass pass 
Scanning Brookfield  DUS 2057  Gelation Index  - 12 12 
Volatility  DUS 2046  Volatility (Noack), % off , (max)  % 22 15 
DUS 2049 Volatility (GCD), % off , (max)  % 17 10 
BRT ( ball rust test)  DUS 2050  Rust rati ng, (min)  Gray value  100 100 
NOTE  There is also a 0.08 min P requirement, unless a successful Sequence VG test has been run  
  
16                © UNBS 2018 – All rights reserved  
 Annex  B 
(informative)  
 
Current and Obsolete Categories of Spark Ignition Appli cation Engine 
Oils 
B.1 API Categories  
Current and previous API service categories are listed below. For automotive gasoline engine, the latest API 
service category includes performance properties of each earlier category and can be used to service older 
engines where earlier category oils are recommended.  
Table B.1 — Current and obsolete API categories for Spark Ignition application Engine Oil.  
Category  Status  Service  
SN Current  Introduced in October 2010 for 2011 and older vehicles, designed to provide 
improved high temperature deposit protection for pistons, more stringent sludge 
control, and seal compatibility. API SN with Resource Conserving matches ILSAC 
GF-5 by combining API SN performance with improved fuel economy, 
turbocharger protection, emission  control system compatibility, and protection of 
engines operating on ethanol -containing fuels up to E85.  
SM Current  For 2010 and older automotive engines.  
SL Current  For 2004 and older automotive engines.  
SJ Current  For 2001 and older automotive engine s. 
SH Obsolete  For 1994 -1997 and older requirements for automotive engines  
SG Obsolete  Introduced 1989 has much more active dispersant to combat black sludge  
SF Obsolete  CAUTION: Not suitable for use in gasoline -powered aut omotive engines built after 
1988 
SE Obsolete  CAUTION: Not suitable for use in gasoline -powered automotive engines built after 
1979.  
SD Obsolete  CAUTION: Not suitable for use in gasoline -powered automotive engines built after 
1971. Use in more modern engines may cause unsatisfactory performance or 
equipment harm.  
SC Obsolete  CAUTION: Not suitable for use in gasoline -powered automotive engines built after 
1967. Use in more modern engines may cause unsatisfactory performance or 
equipment harm.  
SB Obsolete  CAUTION: Not suitable for us e in gasoline -powered automotive engines built after 
1951. Use in more modern engines may cause unsatisfactory performance or 
equipment harm.  
SA Obsolete  CAUTION: Contains no additives. Not suitable for use in gasoline -powered 
automotive engines built af ter 1930. Use in more modern engines may cause 
unsatisfactory performance or equipment harm.  
Note: categories indicated as obsolete do not meet requirements for this standard or any other related Uganda standard 
on Engine Oil  
  
© UNBS 2018 – All rights reserved                 17 
  Bibliography  
[1] ACEA Euro pean Oil Sequences 2012. Service fill oils for Gasoline engines, light duty diesel engines, 
engines with after treatment devices and heavy duty engine oils  
[2] ASTM D4485 Standard Specification for Performance of Active API Service Category Engine Oils  
[3] API 1509, Engine oil licensing and certification system  
[4] SAE J300, Engine oil viscosity classification  
[5] SANS 1516:2005 High performance engine lubricating oil for petrol engines (for API service category 
SJ) 
[6] US 249:2000/ EAS 159, Specificatio n for engine oil  
[7] DUS 249 -3 Engine Oil - Performance Classification - Part 3 - Specification for Compression Ignition 
Engines  
  
18                © UNBS 2018 – All rights reserved  
 Certification marking  
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Cer tification Mark shown in the figure below.  
The use of the UNBS Certification 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 Ugand a National Bureau of Standards and in conjunction with the relevant Uganda 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 supervisi on, control and testing in accordance with the 
certification mark scheme 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 l icensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 
 
 
 
 
 
 
 
 DUS 249 -2: 2018    
 
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Price based on nn pages  
© UNBS 201 8 – All rights reserved