Performance Lubricants
AUT Series Automotive Lubricants

Product Information
The Krytox™ AUT series from Chemours is a line of products
designed to address the automotive industry’s need forlubricants that combine efficiency and performanceat both low and high temperatures. While all grades in
the Krytox™ AUT series are based on ISO 100-grade
perfluoropolyether (PFPE) oil, each AUT grade is formulatedwith unique additives to provide flexible options for anticorrosion protection for automotive equipment and heavytransportation parts, such as viscous fan clutch bearings,alternators, and idler bearings.
Designed to fill the gap between Krytox™ GPL 224 greaseand Krytox™ GPL 225 grease—delivering low temperaturestarting performance while maintaining efficacy at hotter
operating temperatures—the Krytox™ AUT grease series
can increase the service life of critical components, allowing
automotive manufacturers to extend warranties and improve
productivity by reducing component failure. Developed tofill the gap between Krytox™ GPL 104 oil and Krytox™ GPL105 oil, Krytox™ AUT 1045 oil can also increase criticalcomponent service life.

Characteristics of Krytox™
Krytox™ oils and greases are based on PFPE oils. These
synthetic fluorinated lubricants are used in extreme
conditions, such as continuous high temperatures up to288 °C (550 °F) and higher temperatures for shorter periods,
depending on product grade limits. Chemically inert and safe
for use around hazardous chemicals, these lubricants are
nonflammable and also safe for use in oxygen service. Krytox™
oils and greases do not damage plastics or elastomers, norcause corrosion to metals.
Krytox™ oils and greases are silicone-free. These lubricants
are biologically and environmentally inert, contain no
VOC materials or chlorine, and are not hazardous to theatmosphere or ozone layer. They are commonly used
as lubricants in aerospace, automotive, industrial, andsemiconductor applications, as well as in solving many otherroutine lubrication problems.

Formulations for Automotive Applications
While all grades in the Krytox™ AUT series are based on the ISO
100-grade PFPE oil, each AUT grade has a unique formulation
to provide flexible options for anti-corrosion protection for yourequipment.
Krytox™ AUT 2045

Additive-freeKrytox™ AUT 2245

Traditional sodium nitrite, anticorrosion additive

Krytox™ AUT 2A45

Corrosion inhibited with provensoluble additive technology

Krytox™ AUT 2E45

Sodium nitrite-free, anti-corrosion
additive

High Performance Standards Require a High
Performing Lubricant
Greases• Krytox™ AUT 2045 is a white grease based on PFPE.
PFPE lubricants demonstrate outstanding product lifeand unequaled performance. AUT 2045, like most Krytox™
greases, combines the base oil with polytetrafluoroethylene(PTFE) powder as a thickener. The use of PFPE as a base oilprovides superior chemical and thermal stability to all Krytox™
grease product lines.
• Krytox™ AUT 2245 grease addresses a broad range ofapplications from O-ring to bearing lubrication over a wide
temperature range, where corrosion is a potential issue. It is
thickened with PTFE and contains sodium nitrite, a traditionalanti-corrosion additive.
• Krytox™ AUT 2A45 grease is formulated with soluble
additives that exhibit excellent resistance to water washout,repel moisture, and provide extra protection from corrosionof metal parts and bearing surfaces. With no solid additives,bearings run quieter and wear less—extending bearing andcomponent life.
• Krytox™ AUT 2E45 grease is a nitrite-free lubricant that isformulated with anti-rust additives that are effective at low
concentration levels and environmentally friendly, as wellas do not pose any restrictions on long-term recyclability ofthe grease.

Performance Lubricants

Krytox™

Bearing Life Data

Oil
All grease grades in the AUT series are based on Krytox AUT
1045 oil, an ISO 100-grade PFPE oil. Krytox™ AUT 1045
should be considered for any automotive application requiring
the use of an oil, from bearings and small plastic gear boxes toNVH solutions.
™

Typical Properties of the Krytox™ AUT Series Greases
Appearance

White, Creamy Consistency

Estimated UsefulTemperature Range–44–200 °C(–47–392 °F)

Base Oil Viscosity, cSt
20 °C (68 °F)
40 °C (104 °F)
100 °C (212 °F)
200 °C (392 °F)

310
100
12.5
2.5

Oil Separation, wt%after 30 hr
99 °C (210 °F)

4Max. Oil Volatility, % in
22 hr, ASTM D2595
66 °C (150 °F)
121 °C (250 °F)
204 °C (400 °F)

0.1
0.5
2Dropping PointNAStandard NLGI Grade2Specific Gravity at 0 °C
(32 °F), g/cm3

2.0

These values are typical properties and not specifications.

Bearing Life, ASTM D3336

Hours

10,000 rpm, 200 °C (392 °F)
Krytox™ AUT 2245

5,300+10,000 rpm, 180 °C (356 °F)
Krytox™ AUT 2A45
Krytox™ AUT 2E45

6,500+5,500+

Preparing Bearings for Krytox™ AUT 2245 Grease
New unlubricated components and bearings are typicallycoated with rust preventive oils to prevent corrosion while
they are in storage before use. New components should
be inspected for damage and cleanliness before use. Thegreases or preservative oils need to be removed when using
Krytox™ as a lubricant. Failure to do so could result in reduced
component life. Bearing life tests on uncleaned bearings
have shown reduced life in high temperature, high speed
tests where the bearing was filled with a minimum amount ofgrease. The preservatives coat the metal surface to prevent
rusting, so they can also prevent the grease from adhering—causing it to be thrown off by the action of the bearing. The
preservatives will also oxidize and harden, and can create
debris that will contaminate the grease.

Storage and Shelf Life
With the exception of Krytox™ AUT 2A45 grease, which hasa shelf life of up to 3 yr if the package remains unopened
and is stored in a clean, dry and cool location, the AUT seriesof lubricants should have an indefinite shelf life in the sameconditions.

Typical Properties of Krytox™ AUT 1045 Oil
ISO Grade100

Density, 50 °C (122 °F)

1.84

Estimated UsefulTemperature Range–40–200 °C(–40–392 °F)

Oil Viscosity,40 °C (104 °F)
100 °C (212 °F)

100
12.5

Pour Point–41 °C (–42 °F)

The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

For product information, industry applications, technical assistance, or global distributor contacts, visit krytox.com or within the U.S. and Canada, call 1-844-773-CHEM/2436 or
outside of the U.S., call 1-302-773-1000.
© 2016 The Chemours Company FC, LLC. Krytox™ and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and the Chemours Logo aretrademarks of The Chemours Company.
Replaces: K-20051-4
C-10772 (3/16)