Customer Ratings & Reviews

Best available oil

I run this in the summer in my '23 WRX. The 5w-30 offers better high temp protection than the 0w-20 I run in the winter months.

I use this in the winter in my '23 WRX. It's an excellent replacement for the OEM oil and far exceeds it as well. Superior protection and cold temp flow is extremely important up here where temps can run in the negatives frequently.

Fast way to explain just a great oil

First, I've been a diehard Mobil 1 user for umpteen years and I have nothing bad to say about them. I bought a used Jeep and I travel for work. I've heard about AMSOIL, but never thought much about them until I bought the Jeep. I got on their website and started reading. They have copious amounts of data AND they compared against MOBIL 1, so THAT says something. The data shows AMSOIL is the better choice so I made the switch. I CANNOT attest to any improvement in the change. I am writing this review about having piece-of-mind lubricating my vehicles components. Since I have to drive almost 200 miles round trip per day for work, I don't have time for second best. Is AMSOIL more expensive? YES, but it's a "pay now or pay later" thing with me. I'll pay the extra for a data-proven product and piece-of-mind.

Best oil on the market. My mechanic is a Ford guru who is big in the racing scene in Utah and that is all he will use.

When it comes racing or just regular driving Amsoil is the one for me

Hi Been useing Amsoil for years now have a 2016 Ram 1500 5.7 and we Mopar peeps know that Hemi tick. well this Oil has quieted down that a lot great product

Run this in my 800whp corvette and my 500whp civic wouldn't trust any others with them.

I have been using Amsoil for many years. I have complete trust in the products.

This product is amazing I ran nothing but this on my 07 gt500.

Moteur tourne plus les matin de grand froid hivernale et fait plus de km avant que llhuile se dégrade!!

I have used Amsoil products in my vehicles since 1980 I would not use any other procuct.

I have well over 1,000,000 miles on cars and 300,000 miles on motorcycles since 1975 using Amsoil Synthetics. Never have any regrets or engine problems.

I have used with much success the Amsoil Signature Series 5W-30 in my Nissan Maxima and Nissan 370Z. Engine runs quieter, shifts through gears much smoother, smoother to shift and engine performance when pushed is top notch with little to no struggle. Engine oil and transmission temps run noticeably 10 degrees cooler under normal operation. Noticed all these differences after just two cycle changes with this oil. I purchased my Maxima brand new and it runs like the day I drove it off the lot. If you care about your vehicles, if you care about how they operate, if you want to drive them well past 200,000 miles, then Amsoil is your solution to get you there!

Amsoil is the Best and the only oil I use…

Amaoil makes my angel run at a lower temperature saving fuel

Great product using 3 year's

I have been using AMSOIL in my Harley for about 6 years; Harley touring bikes are air cooled, and summers in Arkansas can get pretty warm, so it is a good test for motors that get pretty hot. I am very picky about what oils I put in my vehicles. I have learned that if you take care of your engine your vehicle it will run better and chances are it will last longer. I just turned over 100,000 miles in my 2017 Lexus RX 350, and it still runs great. I have been using AMSOIL in it for about 3 years now. I still like to change my oil in the Lexus every 10,000 miles. I like going to the AMSOIL web site, find the best oil for my vehicle and click a few boxes and the oil is on my door step in a couple days. There are a lot of oils out there that you can use. I trust AMSOIL and will stick to what works. It's easy to see exactly what I used last time and just reorder when it comes time to change my oil. I like

I have a question do they make signature series for Audi BMW automobiles