ATF Synt DIII-H is a fully synthetic automatic transmission fluid engineered for the lubrication of automatic transmissions in modern passenger cars, commercial vehicles, buses, and off-highway equipment including road, construction, mining, and agricultural machinery. The synthetic base oils provide superior performance compared to conventional mineral ATF fluids, delivering extended service life and enhanced protection across the full range of operating conditions.

This fluid is also highly effective in secondary applications including power steering systems, torque converters, hydraulic systems, and hydraulic couplings where advanced ATF performance is specified. Its versatility makes it a valuable choice for fleet operators who want a single, premium ATF product for multiple applications.

ATF Synt DIII-H features excellent viscosity-temperature characteristics, which is a key advantage in automatic transmission applications. The fluid maintains consistent viscosity across extreme temperature ranges — flowing readily during cold-weather startup for immediate hydraulic response and smooth shifting, while retaining adequate film strength and viscosity under the high temperatures generated during sustained highway driving, towing, or heavy-load operation.

The synthetic formulation delivers superior oxidation resistance that extends fluid life and prevents the formation of harmful deposits and sludge inside the transmission. Additional benefits include precisely calibrated friction properties for smooth and consistent shift quality, excellent anti-wear protection for gears and clutch packs, reliable foam resistance, and strong corrosion protection. ATF Synt DIII-H provides confident all-weather performance and extended drain capability, making it an ideal upgrade from conventional mineral ATF fluids for operators seeking maximum transmission protection and reduced maintenance costs.