The Castrol TranSynd 668 Full Synthetic Transmission Fluid is specifically designed for heavy-duty trucks, buses, and industrial equipment with Allison Transmissions. It is Allison TES 668™ Approved and has a viscosity grade of SAE 75W. This product offers improved gear protection and extended drain intervals, making it a reliable choice for maintaining optimal transmission performance. Made in the United States, this 1-gallon fluid is compatible with TES 295® and TES 468™ formulations, providing a versatile and high-quality solution for various vehicles and equipment.
