Signature Series Fuel-Efficient Synthetic Automatic Transmission Fluid

ATF Product Overview (Product code ATL)

Transmissions in commercial vehicles, SUVs, trucks and vans – particularly those used for hauling or towing – are subjected to severe-service operation and increased heat. Elevated temperatures cause fluids to break down, allowing damaging metal-to-metal contact and the formation of sludge and deposits. The problem is worse in modern transmissions with more gears, clutch packs and narrow oil passages that require clean, high-quality fluid to achieve maximum performance and life.

AMSOIL Signature Series Synthetic Automatic Transmission Fluid is specifically formulated to withstand the rigors of heavy towing, elevated temperatures and challenging terrain. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use and even abuse.

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AMSOIL Tech Tip: Transmission Fluid


Proven in 180,000-mile, Severe-Service Taxi Fleet Field Trial

To demonstrate its effectiveness in severe service, Signature Series Multi-Vehicle Synthetic ATF was installed in Las Vegas taxi cabs. The vehicles routinely encountered demanding stop-and-go driving loaded with passengers and cargo, while the desert environment presented extremely hot ambient temperatures, placing enormous strain on the fluid. Following 180,000 miles, a transmission was selected for analysis. The Aluminum Beaker Oxidation Test (ABOT) is an industry standardized test used to determine a transmission fluid’s oxidation resistance, which is a good indicator of its service life. Testing by an independent, third-party lab revealed that after 180,000 miles in severe service, Signature Series Multi-Vehicle Synthetic ATF resisted oxidation longer than required for new fluid to meet the Chrysler ATF+4 specification (see graph). Internal components, including the valve body and clutch plates (pictured), were virtually free of damaging sludge, deposits and wear, confirming the lubricant’s high level of protection for severe-service applications.


Protects Against Thermal Breakdown

Signature Series Synthetic ATF is formulated with high concentrations of antioxidants, making it naturally heat resistant. It provides outstanding protection against sludge and varnish deposits that clog narrow oil passages and contribute to clutch glazing. After 180,000 miles in severe service, fluid analysis revealed Signature Series Multi-Vehicle Synthetic ATF contained 83 percent of its original oxidation inhibitors, proving its long-lasting resistance to thermal breakdown.

Outstanding Wear Protection

Varying speeds and loads causes torque multiplication and extreme stress on gears and bearings. AMSOIL formulated Signature Series Synthetic ATF with high film strength and premium anti-wear/extreme-pressure additives to help prevent wear during severe service. In the industry-standard FZG Gear Wear Test, Signature Series Multi-Vehicle Synthetic ATF that had been used for 180,000 severe-service miles achieved a “Pass” at stage 12 – the highest stage. The results exceeded the Ford MERCON V and Chrysler ATF+4 specifications for new fluid, demonstrating the lubricant’s long-lasting wear protection.

Cold-Temperature Fluidity

Cold, thick automatic transmission fluid lengthens shift times and reduces fuel economy. Signature Series Synthetic ATF is wax-free and delivers extraordinary cold-flow properties. It helps improve shift response, energy efficiency and warm-up times.

Friction Durability

Today’s transmissions are smaller and must withstand higher horsepower and torque while delivering smoother shifts, all with longer fluid life recommendations. AMSOIL Signature Series Synthetic ATF is formulated with friction modifier additives that deliver outstanding clutch-holding capacity (static friction), torque-transfer ability (dynamic friction) and anti-shudder properties (slipping torque-converter clutches). Analysis reveals that after 180,000 miles in severe service, Signature Series Multi-Vehicle Synthetic ATF provides nearly identical friction properties as new fluid for smooth, reliable shifts.

Transmission Fluid Evacuation Service:  PDF


Match Your VehicleProduct Guides

AMSOIL Signature Series Fuel-Efficient Synthetic ATF is recommended for transmissions and other applications that require any of the following specifications:

Aisin-Warner AW-1; BMW 83 22 0 142 516, 83 22 2 152 426; Chrysler MOPA 68157995AA, SP-IV, 68218925AB; DSIH 6p805; Ford MERCON* LV, SP, ULV; GM DEXRON
HP, DEXRON* VI, ULV; Honda/Acura DW-1,* Type 3.0; Honda 2.0; Hyundai/Kia SP-IV, SPHIV, SP-IV-RR, NWS-9638, SP4-M; JASO 1A-LV; JWS 3324; Mazda ATF FZ; Mercedes Benz
236.12, 236.14, 236.15, 236.41; Mitsubishi SP-IV, ATF J3, ATF-PA, ATF-MA1; Nissan MaticS, Matic W; Saab 93 165 147; Shell M-1375.4, M-1375.5, M-1375.6, M-L 12108; Toyota
WS; Volvo 31256774; VW/Audi G 055 005, G 055 162, G 060 162; ZF S671 090 255.

AMSOIL Signature Series Fuel-Efficient Synthetic ATF is backward compatible and replaces DEXRON III fluids in older GM automatic transmissions. (DEXRON VI specification supersedes the
obsolete DEXRON III in GM vehicles.) Also suitable for Toyota CVT applications calling for the Toyota “WS” specification.


Normal Service: Follow the vehicle manufacturer’s normal-service drain interval.

Severe Service: Double the vehicle manufacturer’s severe-service drain interval.

Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.


AMSOIL products are backed by a Limited Liability Warranty. For complete information visit AMSOIL Warranty Information

* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are AMSOIL-engineered for use in the applications shown.

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Customer Reviews on the Fuel Efficient ATF: 


AMS oil ATF full synthetic

By  RAMON,  a  Verified Buyer  from  California   on  December 08, 2023
Vehicle I own is a 2014 Silverado , did the transmission oil and filter change using AMS oil full synthetic ATF , highly recommend I feel like the trans torque converter has better engagement and gears shift smoothly.

Great Product

By  Collin,  a  Verified Buyer  on  November 20, 2023
Currently running in a Dodge Grand caravan, shifts really well for a dodge trans

Trans Fluid

By  JOEL,  a  Verified Buyer  from  Cloverdale Indiana  on  October 19, 2023
Did Trans fluid change on my 2017 Chevy Trax at 70,000 miles. Seems to have made difference in shifting smoother than before.

Versatile stuff..

By  WAYNE,  a  Verified Buyer  from  Ottawa Canada  on  October 14, 2023

I use this stuff in my transmission and power steering system in my 2008 Chevy Uplander.. I also use it in the front forks on my 1984 Honda V65 Sabre. Transmission works great no issues, shifts beautifully. I live in Canada and we get cold winters and my power steering would wine something fierce 30 or 60 seconds when starting it in -10 c weather with regular power steering fluid well with Amsoil ATF in the system (completely flushed) it wines for a spilt second maybe.. If you listen very carefully you can hear the wine for a second.. That’s the difference ! Yes you can use ATF in a GM power steering system. The older type of Amsoil ATF for dex3 not the new type for dex4&5. The hydraulics in the power steering system instantly start working when power is applied to the pump with Amsoil ATF. Pulling out of the parking garage requires lots of turning and with Amsoil ATF it don’t matter if it’s warm or cold it just works ! With the old power steering fluid and cold weather my steering would kick in and out descending the parking garage until it warmed up !! Not with Amsoil ! AS per the shop manual for my 1984 Honda you can use fork oil or ATF either will work in the front forks on my 600lbs bike.. Well I just did the fork seals and I put in Amsoil ATF to spec. so we will have to wait and see how it goes.. So far so good tho..!!


By  TIM,  a  Verified Buyer  on  October 07, 2023

Changed my filter and put this fluid in. Seems to shift smoothly. The Easy packs were easy and convenient to use. Excellent product