Synthoils Store

AMSOIL Synthetic Automatic Transmission Fluid Protects your Vehicle

AMSOIL Signature Series Synthetic Automatic Transmission Fluid has been proven in the field to deliver reserve protection against heat and wear.

The demands on today’s automatic transmissions have multiplied. Excessive idling, extreme temperatures and hauling heavy loads all pose threats to a transmission’s longevity. Work vehicles are consistently used in these severe-service conditions but operators are often unaware of the toll it’s taking on their transmissions.

Automatic transmissions have evolved into an intricate mix of gears, clutch packs and narrow oil passageways that require a steady supply of lubrication. They have become smaller yet must withstand higher horsepower and torque. Transmission fluid must act as a lubricant protecting against intense heat and shearing, and also as a hydraulic fluid to enable shifting. Neglecting this vital fluid leads to extreme heat stress, erratic shifts and catastrophic wear. Ultimately, a time-consuming and costly repair or a complete transmission replacement become the only options.

The AMSOIL Advantage

AMSOIL Signature Series Synthetic Automatic Transmission Fluid is specifically formulated to withstand the rigors of daily towing, elevated temperatures and challenging terrain. Its wax-free formulation remains fluid in sub-zero temperatures and ensures excellent shift response, energy efficiency and warm-up times. It provides reserve protection during heavy use and even abuse.

The Proof

F-150 Towing Field Study

The consistent hauling of boats, campers, equipment or supplies can tax a transmission to the point of failure. We submitted Signature Series Synthetic Fuel-Efficient ATF for a field trial at an independent test facility to prove its ability to protect transmissions in the severe, high-heat environment generated in real-world towing scenarios.

A loaded trailer was towed on real highways and streets throughout the trial. Signature Series Synthetic ATF handled the punishment with ease. Throughout 115,000 miles in severe-service it delivered outstanding protection for gears and clutches and maintained smooth shifts.

2013 Ford F-150* Pick-up
Mixed city/highway miles routinely towing 3,000 pounds
Excellent wear protection despite 4x the manufacturer’s recommended drain interval

Las Vegas Taxi Cab Field Study

Few applications test lubricants like taxi cabs, especially those running in the searing heat of Las Vegas. After more than 180,000 severe-service miles in this challenging environment, AMSOIL Signature Series Synthetic ATF delivered complete wear protection and provided shift quality nearly identical to new fluid***.

2010 Dodge Charger* taxi cab
Extreme desert heat
180,000 stop-and-go miles
3X the vehicle manufacturer’s severe-service drain interval

Reserve Protection

The results of these studies offer convincing proof of performance for fleets, contractors and others who operate work vehicles daily in severe-service conditions. The added protection of AMSOIL synthetic lubricants shields expensive work vehicles from the negative effects of extreme heat, especially sludge formation, keeping them on the job making money.

AMSOIL Signature Series Synthetic Automatic Transmission Fluid (ATF, ATL)