Mobil Delvac 1™ ATF 668

Mobil commercial-vehicle-lube , Denmark

Advanced Synthetic Technology Automatic Transmission Fluid

Product Description

Mobil Delvac 1 ATF 668 is an advanced synthetic technology fluid recommended by Allison Transmission, Inc. approved against the Allison TES-668 Specification.  The fluid is designed to meet the demanding requirements of modern heavy duty automatic transmissions. The synthetic technology base oil composition enables excellent performance even in some of the harshest of 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 protects against thermal breakdown at high operating temperatures, while still providing outstanding performance at sub-zero temperatures.


Features and Benefits


Advantages and Potential Benefits

Enhanced, long-term frictional properties.

Helps improve overall and extends 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.

Significant wear reduction and long transmission life.

Excellent low-temperature fluidity.

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

Exceptional shear stability.

Leads to viscosity retention even under the severest 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 recommended by ExxonMobil for use in modern high performance trucks, buses, utility vehicles, haulers, vans and other equipment requiring Allison TES-668  performance level.


Specifications and Approvals

This product has the following approvals:

Allison TES 668


Properties and Specifications



Density @ 15 C, kg/m3, ASTM D4052


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


Pour Point, °C, ASTM D97


Viscosity Index, ASTM D2270


Flash Point, °C, ASTM D92


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


ASTM Color, ASTM D1500


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



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.


ExxonMobil Nordic
Affiliate of ExxonMobil Nordic AS, Norway
Gydevang 39-41
DK-3450 Alleroed, Denmark
Tel: +45 45 99 02 10
Fax : +45 45 99 02 80

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 
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