Customer Ratings & Reviews

Transmission fluid needed to be changed and wanted quality fluid to put in

This is amazing ULV fluid. I had a local manufacturer tell me I have made a great choice for fluid with Amsoil ULV. The manufacture is based out of Fort Walton Beach Florida and build amazing transmission parts and even have their own fluid line of ULV. I use this fluid in a 10L80 swapped into my 2014 Chevy Tahoe PPV with a LS 427 stroker in front of it. Love it!

I have a new Gen4 Tacoma 8 speed automatic. The first couple first to second shifts have always been unpleasant. I did a complete fluid and filter change to the Signature Series WS compatible ATF and the issue is resolved. I've used Amsoil ATF in my 99 Tacoma for over 24 years. I couldn't be happier with any other product. Amsoil gets Five Stars

great fluid sadly amsoil is missing the boat on stockibg their oil filters many many monthsof them being outof stock

Great product works well past the expectations! Fast delivery. Transmission runs smoothly. Chevy Silverado trail boss 8L90

It was great

After changing the transmission oil and filter for the first time at 136k miles, this fluid made my truck shift like butter. I’ve also noticed my transmission temperature down after driving in 110° Texas heat. I wish I had done this sooner for my sensitive 10R80 transmission!

I take a lot of family road trips and after switching to the AMSOIL my transmission is a lot smoother.

I have changed everything over to amsoil products. Time will tell me if I have made the right decision. So far Allstars good

Driving a GMC I am always aware that the transmission is an issue. But my mind is put to ease using Amsoil. My transmission run 10 degrees cooler than it used too even pulling a trailer since I switched to Amsoil.

Great stuff, easy to use keeps engine running smoothly

I have a 21 Ford truck with the problematic 10 speed transmission. Bought the truck used and now has 160,000 miles on it. Changed out the trans fluid with my preferred AMSOIL ATF, and the transmission is running great. AMSOIL fluids are far superior in my book to anything else on the market. I plan on getting at least 500,000 miles out of this truck, so I will continue to use AMSOIL fluids, which I totally believe will help in making that happen.

my 2019 silverado 5.3 w/ 8spd trans 50k miles had a 1-2 shift that would dropout when cold since new- changed trans filter and used amsoils s/s atf , 2 weeks later did another drain and fill, the 1-2 harsh shift went away. i got 62k miles on it now. I will be doing a yearly drain and fill with amsoil ss atf . I use amsoil products in everything I own that uses oil/atf /fuel- and care care products

I use this product in the transfer case of my Jeep Rubicon and it has work well. The collapsible bottle makes it easy to fill the transfer case without a pump.

Ive got a 2011 GMC Sierra 1500 6 speed that i bought new and i change the ATF with Amsoil signature every 75,000 miles. Shes got 365,000 on her now same transmission no issues. Bought it in my 20's so its done a few burnouts and plenty of towing. Stuff must work

I travel 50,000 miles a year- I always use this in my vehicles- can’t assured a breakdown 1000 miles from home. I get better gas mileage, transmission stays cooler, smoother shifting, great product 10 out of 10!!

Amsoil ATF actually restored my car’s fuel efficiency. I don’t even know how that is possible. I notice my car’s highway mpg went from 27 mpg to 30 mpg. It is weird, I just don’t know how it is possible but it did happened. I thought changing motor oil, spark plugs and air filter would restore fuel efficiency, but it did. I am a loss for physics.

For this time around for the PM on my 19 year old truck, I decided to try AMSOIL. The shifting on the transfer case feels so smooth and effortless and highly recommend it.

Works great, kept my transmission working and plenty cool in the black hills while we were pulling our 34' trailer.

My 10 speed never shifted this smooth before this. I did two drop and refill transmission refills. I'll do another 3rd one after 500 miles. This will give me at least 80% replacement. I have 110,000 miles.