Customer Ratings & Reviews

This is the best! I will use this from now on

I recently purchased a new to me 1999 SLP Firehawk and this oil was recommended to use. Pricing was great and shipping was fast. Great oil and great service.

Oil is great, doesnt seem to get as dirty as quickly as other oils...but it doesnt seem to cool down very well once it gets overheated.

Runs like new again

Amsoil technologies have been the benchmark that is driving the other brands to step up. Simply said....Amsoil performs. It is tested and proven to perform better than all others. I trust and use Amsoil in all of my vehicles.

Fast delivery service. Top of the line oil for My Hemi. Have used Amsoil in every engine I have since 2002 from Harley's to lawnmowers to Hemi's, also so far I've NEVER had the Hemi tick and I credit it to Amsoil...

I never thought in my life how much a quality motor oil can make a huge difference to my car. I have used Mobil 1, Castrol, Supertech, Kirkland, which all of them did the minimal job its supposed to do, keep my car operating and no sludge. However, the moment I used Amsoil Signature Series, my car has not only been getting benefits of protection but my engine has been revitalized where it feels lile it has no friction. My mpg has drastically improved by 10+ mpg. I have now learned the difference between 100% synthetic and full synthetic. Despite the upfront cost, it is actually a free motor oil compared to buying any other brand. I have saved more money through gas mileage that it makes up more than enough for my car. This oil exemplifies the saying of being cheap is more expensive. Better to buy the best oil and save more in the long run than buying a cheap oil that will cost you more down the line through gas mileage and possibly engine wear.

My two Honda vehicles love this oil! Runs smooth, and engines seem more efficient as my fuel mpg is now (25.0 mpg). 2024 Honda Ridgeline. My wife’s 2022 Honda CRV turbo runs incredibly smooth, and is getting 36.0 mpg. This is the only oil going in our engines.

A friend recommended this for my Toyota tundra. He said it made his engine quieter. I changed to this oil and immediately on start up my engine was noticeably quieter and better protection.

Been using Amsoil Signature Series 0W-20 for Years. When I bought my 2020 Toyota Tacoma new , been using Amsoil Signature every oil change once a year. The weather here in Nevada, in summer it Hot! Hot! Hot! In winter it Cold! Cold! Cold! This oil is outstanding!!!

Run amsoil in everything, 5w-30 goes in a 97 Avalon with 375k miles. Amsoil increased mpg avg by almost 3, this was switching from mobile 1.

Currently loving the oil, but have yet to fix oil conception in a GDI engine. Oil dilution is still a part of my life, but I have noticed some improvement. I do wanna try the restore and protect oil from Vavoline, see if it can help, and then switch back to Amsoil.

0W-30 Signature oil really protects, cleans, resists gumming, foaming. My SUV starts quickly even in the most severe cold temperatures yet holds full proper oil pressure at extreme heat. Top quality and MORE than worth every penny per ounce!

I would recommend this oil for everyone, this is the only oil I put in either of my vehicles.

The only product I use. Since 1994

Best engine oil ever 👌, will always use this product

My friend is a master Toyota mechanic with over 40 years experience and he started me using Amsoil over 20 years ago and thats the only oil i have used in all my Toyotas since. I have over 300K on my 2002 Tundra and over 150K on my 2014 and they burn very little oil and run like the day i bought them. As far as i’m concerned, Amsoil is far and away the best oil on the market today. It may be a little more expensive, but you get what you pay for.

My 2022 Elantra N has been using this series since day one and I have used other brands on my other vehicles but none for me has done better then Amsoil across the board.

Used 6.5 quarts of 0w20 in my 2025 Land Cruiser, it’s been very smooth so far.

I doubt I’m the only one to run this in a Subaru, and it isn’t the most popular choice, but I love how clean this keeps my engine even under boost and my lead foot. Good intervals and the gold standard in synthetic keep my car running strong. It seems to love this oil and that’s good enough for me.