Customer Ratings & Reviews

Ever since being introduced to Amsoil, it's all I use. I've put it toe-to-toe with friends using other brands of oil, and they've eventually seen the light and moved over to using Amsoil as well. Never disappoints.

I'm currently using your 5W-20 synthetic motor oil in a 2008 Toyota FJ Cruiser. Startability in sub-zero weather has been excellent.I've also noticed an increase in gas mileage, which is a definite plus. The engine runs quieter and smoother than it did with conventional motor oils. I will continue using Amsoil products until I'm no longer able!

Bought a brand new 2017 Ford Explorer (NA 3.5L). After a couple thousand miles, I changed the oil over to Amsoil Signature Series, using Amsoil's filter as well. I've been changing the oil based on the in-dash oil life counter which gets to right about 10,000 miles for servicing. All has been working just fine so far at 25k.

I put it in my vehicles and change it when needed

Amsoil is Great. I've used it for 20 years. It's in everything I own. Why would you use any other oil?

Some of the best oil I have ever used. I tow a 10k lb trailer and oil temps even in dead of summer stay very low. Would definitely recommend to anyone.

I buy this product once a year along with the oil filter. I have a car that is 16 years old and it runs great. Have always used this oil and filters.

The only reason I'm not giving it 5 stars is because I have a 2002 Nissan pathfinder with 240,000 miles leaks a lil oil but with Amsoil 5w-30 signature series and when I use it it leaks even more...think about your high mileage customer. I aslo have a Infiniti QX56 2008 with 132,000 with 5zw-30 signature Series no leaks at all and just did the transmission fluid ATF, transfer case and front a rear diff with the server gear fluid and shifts are so smooth rides like a dream 5 stars on that! But for my 02 Pathfinder had to switch back to a conventional high mileage oil with seal conditioner.

Have used AMSOIL for 2003 SVT Focus and 2011 Saab 9 3. Focus has 336,000 miles and Saab has 115,000.

I use this in my 2001 f150. I currently am at 246,000 miles and it is still a strong motor and have not broke down this motor yet for internal work or repairs.

Love the protection and convenience of 1 oil change a year.

I use this oil in all my vehicles. It works day in and day out

When you have some get in the truck & ask why it runs so well it opens the door

Works better don't burn as fast in my truck that eat gas and oil as snacks

Works great! Have used it in every machine I own for the last 13 years. I have Never once have had an engine issue on any vehicle I own since switching to Amsoil.

I do my oil changes annually and find that my vehicle runs smooth all year long. I've used other synthetics and have found from my experience that my car responds best to amsoil especially as I approach 20000km mark at the end of the year.

I have multiple vehicles and use it in all of them, worries end when using Amsoil.

Using my personal vehicle. Stands up to hot and cold temperatures well. I like longer intervals of oil changes

Awesome product. Use it on both my car's.

I use Amsoil in everything I own that has an engine( mower, snowblower, generator, compressor, truck, and minivan). What sold me was during harsh cold winter months (-25 to -35 Celsius) my truck kinda turned over slow for the first turn of the engine before firing right up using conventional oil. Thought what heck let's see how it works with synthetic oil during the winter..... long story short I use it all year round and won't ever switch back.