The 3/1 gallon Castrol Heavy Duty TranSynd 668 is a full synthetic 668 Automatic Transmission Fluid from Castrol. Formulated for heavy duty trucks applications. Delivers long drain protection. Meets Allison TES‑668 specifications.

• Brand: Castrol
• Product Type: Automatic Transmission Fluid
• Product Family: Transmission Fluid
• Base Formulation: Full Synthetic
• Viscosity Grade: 668
• Base Oil Type: Full Synthetic
• Additive System: TranSynd 668 Additive System
• Compatibility: Allison Transmissions
• OEM Specifications: Allison TES‑668
• Industry Application: Heavy Duty Trucks
• Equipment Compatibility: Transmissions
• System Application: Long Drain Protection
• Protection Degree: Extended
• Package Size: 3/1 gallon

• Heavy duty manual and automatic transmissions
• Eaton, Allison, and ZF transmission systems
• Class 6–8 commercial truck transmissions
• Off-highway and construction equipment
• Universal tractor and UTTO applications

Allison Transmissions Compatible equipment: Transmissions. Meets Allison TES‑668.

Store in a cool, dry location. Keep out of reach of children and dispose of used lubricant in accordance with local environmental regulations.