The TranSynd 668 Transmission Fluid is a premium, fully synthetic automatic transmission fluid for Allison on-highway transmissions.

WHY IT MATTERS

The fluid is key to proper lubrication and operation of the transmission. It also protects the transmission from premature gear wear, clutch failure, and oxidation.

BENEFITS

Helps protect the transmission from premature gear wear, clutch failure, and corrosion
Prevents foaming, deposits, and oil thickening
Lubricates the transmission internally to reduce friction
Reduces internal temperatures
Longer fluid and component life
Provides better shift quality
Optimum transmission operation
Castrol genuine part
Manufactured to original factory specifications

SIGNS OF NEEDING REPLACEMENT

Fault codes
Fluid contamination
Scheduled maintenance requirements

CAUSES OF FAILURE

Fluid contamination
Lack of maintenance
Overheating

REQUIRED PRODUCTS

Transmission filters
Seals