Mobil Delvac 1™ ATF 668

Mobil commercial-vehicle-lube , Australia

Advanced Technology Synthetic Automatic Transmission Fluid

Product Description

Mobil Delvac 1™ ATF 668 is a fully synthetic transmission fluid recommended by Allison Transmission, Inc. that is approved against the Allison TES 668® specification, and is backwards compatible for applications recommending Allison TES 295®.  The fluid is designed to meet the demanding requirements of modern heavy duty automatic transmissions. The synthetic base oil composition enables excellent performance even in some of the harshest operating conditions. It offers outstanding gear shifting and power transfer performance. Versus conventional ATF fluids, the inherently high viscosity index and stability of  Mobil Delvac 1™ ATF 668 helps protects against thermal breakdown at high operating temperatures, while still providing outstanding performance at sub-zero temperatures.


Features and Benefits

Mobil Delvac 1™ ATF 668 advanced technology has demonstrated extended drain, long-term friction retention, and low-temperature capability. Further, it helps improve overall transmission durability and cleanliness. Key features and benefits include:



Advantages and Potential Benefits

Enhanced, long-term frictional properties.

Helps improve and extend transmission efficiency, smooth shifting performance and fuel economy.

Exceptional thermal and oxidation stability.

Keeps transmissions clean to extend life and performance even under some of the harshest driving conditions.

Outstanding film-strength and anti-wear properties.

Helps reduce significant wear and improve long transmission life.

Excellent low-temperature fluidity.

*Provides prompt and reliable lubrication at sub-zero ambient temperatures down to –54º C.


Disclaimer: *ASTM D97 Pour Point testing data

Exceptional shear stability.

Leads to viscosity retention even under the most severe heavy duty, high temperature operating conditions.

Compatible with mineral ATF fluids.

Reduced concern in top-off situations and excellent seal materials leakage control.



Mobil Delvac 1™ ATF 668 is a fully synthetic transmission fluid recommended by Allison Transmission, Inc. that is approved against t


Specifications and Approvals


This product has the following approvals:

Allison TES 668


Properties and Specifications



Brookfield Viscosity @ -40 C, mPa.s, ASTM D2983


ASTM Color, ASTM D1500


Kinematic Viscosity @ 100 C, mm2/s, ASTM D445


Flash Point, °C, ASTM D92


Viscosity Index, ASTM D2270


Pour Point, °C, ASTM D97


Kinematic Viscosity @ 40 C, mm2/s, ASTM D445


Density @ 15 C, kg/m3, ASTM D4052



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.


Mobil Oil Australia Pty Ltd
A.B.N. 88 004 052 984
12 Riverside Quay
Southbank Vic 3006
+61 3 8633 8444

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification.  Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations.  The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit 
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.