Customer Ratings & Reviews

I always use signature series transmission fluid. I can say that it works better with smoother shifting in all my transmissions. I have had vehicles go over 300,000 miles with no transmission issues at all! Great hydo boost fluid also. Nothing else even comes close to the quality of this fluid?

Best transmicuon oil

The many many years using AMSOIL, I have always loved the products! In recent years I have noticed that customer service and fast shipping has now caught up with the product quality! Thanks!!!

I just started using this in my transfer case on my Super Duty. It works well. Am going to try it in transmission at my next service interval.

Used for transmission service on 2008 Honda Pilot. After 500 miles, smoother shifting and no gear hunting.

Changed trans fluid on my 2015 Jeep Renegade it shifts so much smoother.Great product .

I recently changed the transmission filter & did a couple pan drops a day apart from one another using this stuff right here.. I thought all the dramatic positive reviews about this stuff was a bit far fetched UNTIL I tried it myself! The 6L90 in my 2013 Silverado 2500 has NEVER shifted so well & smooth! HIGHLY recommend

I changed the trans fluid in my 17 Buick cascada. The transmission is noticeably smoother shifting. I wish I had done it sooner. My wife has a 20 Cadillac XT6. I was going to wait until 27 but now I will do it next year.

Flushed my transmission with this oil and seen and felt an improvement first thing. Really well pleased.

So far doing what it’s supposed to. No issues.

Probably the best ATF Fluid out there. Changed the fluid in my 07 6.0L F250. Transmission shifts a little nicer and smoother now and the transmission temperature is slightly cooler, difference is especially noticeable when towing or hauling. Would recommend.

I bought this for my 2016 hellcat charger and the transmission feels a lot better and smoother. You can feel the difference immediately.

I don’t have any technical data for reference, but my truck shifts smoother.

I had a shifting problem, up and down on a 2019 Silverado 8L90 8-speed transmission. This transmission only had 45,000~ miles on it. Removing the prior fluid, changing the filter, essentially flushing the tranny with the BLUE ATF resolved any issues I was experiencing. The transmission actually shifts better now than it ever did, even brand new. AMSOIL Signature Series ATF is magic! Great stuff and I highly recommend it!

Shifting speed and smoothness improved, which was expected with a new fluid. But I really didn't expect acceleration to improve and it did. The transmission is quieter too, so all around, I'm extremely satisfied after 600 miles with the new ATF.

I am very particular with my vehicles especially my 2010 Camaro 2 SS. I wouldn’t trust anything other than Amsoil products. Been using for years and will continue

Serviced the Transfer case on my RAM 2500. So far all good.

This is best ATF I have ever used it made a world of difference in the shifting!!!!

i did 3 drain and fills out my transmission on my 2007 mazda 3 2.0 4 speed. i changed out about 80 % of the old fluid. i am happy with the performance, provides a little peace of mind. in the future doing drain and fills changing out about 2.85 liters of fluid out of a 7 liter transmission i might have done a couple drain and fills with the amsoil OE fluid and then the final one or two with amsoil signature series.

my 1998 chevrolet c1500 tranny was rebuilt at 275,000 km. presumable the transmission shop put in a decent quality fluid. I decided to do 3 drain and fills out the dip stick of 3 quarts each. i changed about about 7 of the 12 total liters. so far no issues. i will likely do a few more changes and switch it al over to Amsoil. provides some peace of mind hopefully a small reduction in drag of the vehicle.