Allison Transmission TranSynd 668 Full Synthetic Trans Fluid

Castrol TranSynd 668 is a premium, full-synthetic automatic transmission fluid specifically formulated for Allison Transmission® on-highway automatic transmissions. TranSynd 668 provides oxidative stability, anti-wear performance, and friction durability, as well as TES 668™ specification differentiators such as extended anti-shudder durability and extended clutch friction durability. This fluid features an Allison TES 668 approval. The TES 668 spec is fully backwards compatible for TES 295® applications, but is not backwards compatible for TES 468™ applications.

Key Features 

• Delivers improved gear protection
• Delivers extended anti-shudder durability
• Delivers extended clutch-friction durability
• Allows for extended drain intervals of up to 300,000 miles or 48 months in general-duty transmissions and up to 150,000 miles or 48 months in severe-duty transmissions 
• Provides excellent shear stability that provides a stable viscosity, which provides wear protection in gears throughout the drain interval 
• Provides excellent thermal and oxidation stability resulting in lower deposit formation
• Provides superior high-low temperature performance due to full-synthetic base fluids
• Provides excellent corrosion and foaming resistance
• Recommended Applicator: Allison TES 668, Backwards Compatible with Allison TES 295