
AMSOIL Signature Series Ultra-Low-Viscosity Automatic Transmission Fluid

AMSOIL Signature Series Ultra-Low-Viscosity 100% Synthetic ATF (ULV) is designed specifically for transmissions requiring FORD MERCON* ULV and GM DEXRON* ULV specifications and is now the primary recommendaton for these applications.
The Ford* and GM* 10-speed transmission has improved power and performance in trucks, SUVs and high-performance cars since its inception. These units must manage ever-higher horsepower, payload and towing capacities, which create additional heat and pressure inside the transmission.
Elevated temperatures cause fluids to break down, allowing damaging metal-to-metal contact and the formation of sludge and varnish deposits. The problem is amplified in transmissions with more gears, clutch packs and narrow oil passages that require clean, high-quality fluid to achieve maximum performance and life.
Reserve Protection
AMSOIL Signature Series ULV 100% Synthetic Automatic Transmission Fluid is engineered to withstand extreme heat and pressure to resist shear. It contains friction modifiers for smooth, reliable shifts, a boosted dose of antioxidants to defend against heat and strong protection against sludge and varnish deposits that can clog narrow passages and contribute to clutch glazing. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use and abuse.
Protection from Wear
Varying speeds and loads cause torque multiplication and extreme stress on gears and bearings. Signature Series ULV Transmission Fluid is formulated with high film strength and premium anti-wear/extreme-pressure additives to help prevent wear during severe service.
- Withstands the rigors of heavy towing, elevated temperatures and challenging terrain
- Remains fluid in sub-zero temperatures
- Provides reserve protection during heavy use and abuse
AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Extreme-Pressure Gear Lube

AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Extreme-Pressure Gear Lube (SVL) is specifically engineered for maximum performance in severe-duty applications, such as towing, hauling, steep-hill driving, commercial use, plowing, racing, off-road use, rapid acceleration, frequent stop-and-go operation and high ambient temperatures.
Iron-Clad Protection
SEVERE GEAR maintains its viscosity for long-lasting protection against metal-to-metal contact. Proprietary AMSOIL additives form an iron-sulfide barrier coating on gear surfaces, providing the ultimate line of defense against wear, pitting and scoring.
Thermal Runaway
AMSOIL SEVERE GEAR helps prevent “thermal runaway” – a phenomenn caused by a lubricant’s inability to control friction and increased heat under high-stress conditions. By controlling thermal runaway, AMSOIL SEVERE GEAR 100% Synthetic EP Gear Lube helps equipment run better and last longer.
- Advanced protection against wear
- Controls thermal runaway
- Protects against rust and corrosion
- Helps reduce operating temperatures
- Long oil, seal & equipment life
- Contains friction modifiers for limited-slip applications



