Customer Ratings & Reviews

Only oil I use in my Colorado! I have been a customer and user for years and zero problems!

Amazing product, I run in all of my vehicles. Improved mpg’s noted as well.

Oil definitely quiets the engine down. AMSOIL is the way to go if you’re shooting for reliability and longevity out of your engine.

Excellent motor oil.

Really good oil, I recommend it to everyone, and it's fast shipping to.

I'm loving amsoil's product, it is really good stuff. My only concern is as always the shipping cost if purchasing for less than 130$ CAD other than that it is great service and fast shipping to.

I use Amsoil because it is the best oil on the market

Great oil. I’ve been using Amsoil since the 80s. My Honda Civic has 55,000 miles on it and runs as good as the day I drove it off the dealership lot. My 1992 Toyota Pickup uses 10W30 and has 550,000 miles on it. I have a bypass filter on this truck. Still trucking along good. The engine will never break down. Amsoil is the best. There was a mix up with my order which was my fault. So I had to place two orders. Amsoil reimbursed me for the second shipping charge. Just a great company who really cares about their customers.

Maybe this oil is more than we need in our Tacoma but for me it has always performed better than the rest. We stuck with Toyota's 0w20 Synthetic for the first couple oil changes and on the 3rd went to old faithful Signature Series and the difference was noticeable right out of the gate. Will SS completely change your engine performance probably not but in my opinion it will run smoother and allow it to operate at its peak potential. There are other good oils out there but for me Amsoil SS is the one I use and trust the most.

My Lexus has over 243,000 miles- bought it with a little over 140,000. My last 5 oil changes I’ve used this (even though it’s guaranteed for over 20,000 miles I still change about every 5 or 6 thousand) my car runs way better than when I bought it. I also run the AMSoil gear fluid for differential and AMSoil transmission fluid. All original parts. Only engine components been replaced on car since I bought it is alternator and a couple of sensors. And this car had major carbon buildup when I bought it. It pays off in the long run to use the best products!

Too bad they don't read the orders with the codes as the website wouldn't...shouldn't have to call...good oil tho

You shipped an extra gallon of signature and didn’t charge me for it. I called and paid the difference. The right thing to do. See midwestern values below. Unfortunately it fouls up my purchase agenda, and winds up being a little less cost effective for a year. Not a big deal. As I said, I use signature, and it lasts one year and cuts down on maintenance time. I’m loyal to Amsoil and intend to remain so because I see it as a superior product, and customer service offers a personal connection far exceeding what has become the norm. I think it’s midwestern values. But that’s just me. I grew up in Illinois.

Amsoil has made my engine quieter, and improved my fuel economy. Very happy that I switched and I will be switching my differential fluid to Amsoil severe gear here soon as well.

On my 2006 Jeep Liberty with 88,000 Original Miles All other Conversational "Full Synthetic" engine oils made the engine have a tapping sound at start-up. But when I switched to the Amsoil the tapping sound stopped!! Been using it every since and will never use Conventional oils again!

I like knowing I’m protecting my engine and two turbos! No valve train noise and chatter . I use Amsoil in all of my vehicles and motorcycles. You definitely get what you pay for!

Best diesel oil on the market we protect our feet with amsoil.

I run only this in a higher performance engine

been using his product on my Silverado it has over 250000 miles on it and its running like new still best Whear protection I've ever had .

Excellent oil with great results. My truck runs smooth and no real engine heat issues during the summer. The Ford F150 with Turbo has the tendency to run hot. Truly, I believe this oil saved me from the dreaded oil leaks the F150's seem to get around 40 to 60K miles. Dumped all the manfactures fluilds and replaced all with the AMS OIL products.

Unlike many "synthetic" oils on the market , Amsoil Signature Series is 100% synthetic, and is very high quality. My engine stays cleaner and runs smoother , and I'm getting good gas mileage and performance as well. Much higher quality than the oil that Lexus/Toyota uses in their vehicles. I'd recommend Amsoil Signature Series oil to anyone who is serious about performance and maintaining their vehicle in perfect condition. It's so good that I got my family members to switch to Amsoil , and they notice the difference as well.