Shell Spirax S6 ATF A668

Shell Spirax S6 ATF A668
Shell Lubricants

0.00 LBS

Shell Spirax S6 ATF A668 Synthetic Heavy-Duty Automatic Transmission Fluid Approved for Allison TES-668 fluids, Backwards Compatible with Allison TES-295 Approved Fluids

Shell Spirax S6 ATF A668 is an advanced fully-synthetic heavy duty automatic transmission fluid (ATF) developed specifically to meet and efficiently work with the extended drain requirements of late model medium and heavy-duty automatic transmissions requiring Allison TES-668 fluids, formerly Allison TES-295.

Shell Spirax S6 ATF A668 is designed to meet challenges and solve problems. Providing long enhanced protection for both equipment and fluid life, increased fluid performance and stability in arduous conditions, enhanced fuel efficiency of the transmissions, efficient lubrication and hydraulic control system performance within the transmission. 

Some applications include:

  • Approved for use in any automatic transmission that specifies an Allison approves TES295 or TES 668™.
  • Municipal Fleets, Vans, Buses, Commercial Vehicles and Trucks, Motor-Homes, Emergency Vehicles, Heavy-duty pick-up trucks, and more...
  • Can also be used in some Voith heavy-duty transmissions as well as those previously serviceable by Dexron III and Mercon fluids, and is particularly suited to mixed fleet operations.

Additional performance benefits: 

  • Viscosity Stability Control by incorporating the latest synthetic base fluid technology and mechanically stable viscosity index improver, ensures consistent lubrication and oil film thickness.
  • Exceptional oxidation resistance prolongs fluid life and improves its performance by resisting formation of deposits demonstrated in full-scale long duration transmission testing.
  • Excellent low temperature properties ensure maximum performance even within exceptionally cold climates. 
  • Ensures efficient lubrication and effective hydraulic control system performance from this fluids incredible anti-foam and filterability characteristics.

Specifications & Approvals: 

  • Approved:
    • Allison TES-668
    • Allison TES-295
    • Mercedes Benz 236.92, etc.
  • Fulfills Performance Characteristics of:
    • Volvo 97340/97341
    • Ford Mercon
    • Voith H55.6335, etc.


For additional product information, refer to the Product Data Sheet provided...

There aren't any reviews yet. Write a Review.

How to Find the Right Lubricant
How Can a Heat Wave Affect Your Engine Oil?
Oil Ch-Ch-Ch-Changes: New Diesel and Gasoline Engine Oil Specifications
Why Lubricant Additives are Important
What is Engine Oil Analysis?
Bizrate 2023 Platinum Seven Time Winner

Safety Data Sheet
Product Data Sheet

Due to these products being hazardous, an additional shipping charge of $25.00 is automatically added to smaller "Ground Shipments". If you can order any combination of products that makes your total cart weight over 150 lbs. (which is considered "Freight Shipment"), this additional fee is waived. This can equate to considerable savings on shipping.

Sunoco Race Fuels is offering a Free Drum Pump with the purchase of a 54 Gallon Drum of Sunoco E85-R 99 Octane Race Fuel.
To add the free drum pump, first add the '54 Gallon Drum' to the cart, then click the blue 'Add FREE Drum Pump' button.

By entering your amount in the “Quantity” field, the price will automatically reflect the bulk discount below.