Customer Ratings & Reviews

Good quality

Only transmission fluid I use in my 2013 GMC Duramax with the 6 speed Allison. Transmission shifts smooth and effortlessly especially during a recent trip in the mountains with a 11k lbs trailer. Only transmission fluids I use in my vehicles.

I did a single drain and fill on my zf9 transmission at 30,000 miles. Shifts smoother. I will do a drain and fill every 30,000 miles or so for life of vehicle. Easy maintenance for long term reliability.

40,000 miles 2019 Honda Ridgeline 6 speed. Transmission was surging under low load and light throttle, you could see the tach raise and fall a thousand RPM. After doing one drain and fill that has completely gone away. This stuff works!

great product

I decided I'd better change the ATF now at 44k than to wait longer. I'm glad I did, because the fluid was getting off color. Being you can't get it all out, I'll change it again in 10k, or maybe less. That's when I'll use the Amsoil. This change I used the Ford stuff. I also put a deep pan that holds an additional 1.5 qts.

This transmission fluid completely fixed all of the symptoms I had with my transmission. At just 30k miles, the transmission in our 19' toyota highlander felt sluggish and almost like it was slipping; especially in 1st and 2nd gear. I looked up common issues and found the UA80F transmission in our Highlander has been having failures documented at very low mileages (around 55k miles). I researched and many other owners found the oem trans fluid may be the contributing factor and a complete fluid replacement may help symptoms and longevity. I purchased 2 gallons and after draining the Trans and refilling, I pulled the cooler line and slowly ran some of the fluid out, while simultaneously refillingbwith the Amsoil ATF. For only 30k miles, it was darker than it should have been, almost a brown color. After the fluid color slowly cleared up, I filled to the proper level. The car could not drive any better now. Shifts are crisp and positive and any feeling the trans is slipping is gone. Feels like a different car. This makes the powertrain feel so much more connected than it did with the toyota oem fluid. Toyota usually has great products, but sadly, they fumbled the ball with this transmission. I would reccomend everyone replace their oem fluid with this ATF. Not only will it likely save the Trans from failure and reverse symptoms I experienced, I have also lowered the transmissions operating temperatures and my city MPG has increased from around 15, now gets around 17mpg. Thats a huge increase for this heavy of an SUV. I have 4k miles on the new fluid and it drives and feels so much like I would expect a Toyota product to drive; nothing like before.

The best transmission flue

I had a 8l90 shudder issue and with the synthetic Amsoil. Transmission fluid it resolved the problem.

I had just had the transmission service of flush and filter done. I then changed the fluids in the front and rear diffs and used this in the transfer case. Thank goodness I did. The fluid that drain out was black as coal. Now I can rest easy knowing the transfer case is running on fresh Amsoil fluid.

This is great fluid for standard or heavy duty applications. The Mopar fluid as issues in cold environments but this fluid flows constant at all temperatures.

The packaging is great! Easy to use and less mess. AMSOIL is the best product based on decades of personal experience.

Decided to use this ATF in my Ram's transfer case after reading many positive reviews. It is half to a third in price of Mopar's fluid and is recommended by Amsoil. Great work Amsoil!

Works good in 10l80 transmission!

live in Las Vegas where the heat is excessive, this oil for me is the best, my transmission is the 6L80 of a 2019 Chevrolet Suburban, since I put in this oil the transmission feels different, the best of the best.

I have been using Amsoil products for years now since a friend from work recommended them and got me started on trying the Severe Gear and Engine Oil. After really being happy with the Sever Gear and Oil results, especially the Metric Motorcycle Oil, I decided to start servicing my Hyundai SUV's with the Signature Fuel Efficient ATF. After many successful miles later I now put it in all of my transmissions. The latest being my 6L90, which are known for heat and reliability issues. Truck transmission shifts and operates very nicely even at the higher temps that these transmissions operate at. Fluid has held up very well, just like I would expect from an Amsoil product of any kind.

Very good product, great packaging, fast shipping, Thank you

I ordered enough fluid to do a transmission service. I was disappointed that one of the quarts was leaking. You would think the soft containers would not be as susceptible to being popped open. With that aside the product (fluids)is top tier.

Put it in the truck and don't worry, it will do it's job.

After much searching to find the right fluid for my transfer case, I found Amsoil synthetic of the right grade. It was so easy to use, there just isn’t room to get a hard bottle higher than the fill hole.