Collection: Synthetic Gear & Transmission Oil

Our Synthetic Gear Oil are designed to help meet the highest performance requirements of many heavy duty trucks on the road and off the road.
Our Heavy Duty Synthetic Gear Oil meets extreme pressure gear to deliver maximum protection for critical components, including rear axle and differential in on and off - road vehicles operating under severe condition and extreme heat or cold.
Doxa Synthetic Gear Oil meets and exceeds the requirements of API Service Categories GL - 4, GL - 5, and MT - 1.
Our Synthetic HD, I - Shift and ATF is recommended for service fill for heavy duty manual to automatic transmission such as manufactured by EATOM, Meritor, MACK, Volvo, and Allison.