Introducing the next generation of synthetic on-highway automatic transmission fluid, Allison Transmission TES 668®. TES 668® builds upon the proven 20-year record of TES 295® synthetic fluid by delivering the same great performance with a
modern additive package. The robust formulation of TES 668® meets the most demanding specifications related to fluid stability, lubrication and cold operation.
Allison recommends TES 668® Approved Fluids to extend drain intervals and enhance transmission performance and durability in all operating environments.
Allison TES 668® Approved Fluids are recommended for use in Allison 1000 Series™, 2000 Series™, 3000 Series™, 4000 Series™ and H 40/50 EP™ on-highway products.
To purchase an Allison approved fluid, use the Sales + Service Locator to find an Allison Authorized Distributor
in your area.