Customer Ratings & Reviews

Its the best oil so if your smart buy it . Signature series

I have been a preferred customer and have been only using AMSOIL since 2009. The AMSOIL products have never let me or my equipment down. I will use no other. This oil is a 25-thousand-mile oil which I always compliment with the 25-thousand-mile AMSOIL filter.

Very happy, excellent

Love the product and speedy delivery but the shipping is Way to much

2nd order!!!

This is third time I’m using this oil for my sports car really impressed with the quality of the oil. Highly recommended

Love this oil. I use Amsoil in everything on the ranch; all of the vehicles, tractors, SxS, dirt bikes, everything. I have never had an issue caused by oil since switching over. I can’t recommend Amsoil Fluids enough.

Bought used RV w/14k and I knew that it was serviced, but did not have a clue of what oil is in it. Used Amsoil engine flush as as the start of oil change and after oil fill, two Amsoil Upper Engine Lubricant bottles, and two bottles of P1. After start and ten minute run, I stopped engine and checked levels, and restarted again. I noticed how much quieter the F450 V10 sounded. Much less than before. I love any and all of Amsoil's product's and highly recommend this one.

I have used other oils but Amsoil is the best!

My 2012 Corvette Convertible has over 115,000 miles and still runs like new! With other brands of motor oil, I was starting to hear those little noises that an older engine makes over time, and I figured that was just the normal cycle of engine life? I started to use this product the last two oil changes, and those little noises are gone! It’s like I poured in a new engine in the process. I wouldn’t use any other product on my Corvette, and I’m looking for many more miles to come.

I've used this product before in my sports car years ago but decided to use it again in our fairly new aging cars. I instantly noticed an increase in horsepower and performance and reminded me of why I used to buy this oil years ago.