Customer Ratings & Reviews

The 5.7 sees some harsh use during the summer. Towing, extended idling time and dusty roads tend to abuse oil. The Amsoil stands up to the job. Because it is still under warranty I do not exceed the manufacturer recommended service intervals but lab tests show the oil can go well beyond that.

I love this oil and use it in my 3 cars and truck,with the 25,000 mile oil filters.I use this oil in my tractor also.I feel that AMSOIL is the best around and I've been very happy with it.

I use for my family cars, and my boat

Always the best choice for my Nissan Van. Runs so smooth, even with all the miles.

BETTER FOR MY SUV

ExcWeds my needs. Works great only thing I would chage is look at kits for cars like you do for motorcycles and a lower price would be nice.

Awesome Product Nothing but Amsoil

Many years ago I had an 87 ford f150 with lifter noise at 100k miles. I ran across an Amsoil dist. at that time, I changed to Amsoil, noise went away and I put another 150k miles on the truck and the engine was still quiet when I sold it. All I ever did to it was a new timing chain. Been using Amsoil ever since in every vehicle.

Great oil and great price.

It runs great in my car, even after 10,000 miles it seems to stay clean. Helps my cars engine idle and run smoother, just a super good product.

Use in my HD Suburban It actually made the truck run cooler and quieter!!

I use this in my 2013 GMC Sierra 1500 Z-71. It's been a great product. Living in cold temps, and usually making short trips, this fits the profile my truck needs.

use it in our Honda, very pleased

For years, I used mobil1. When the time came, I switched to Mobil 1 high mileage. About 2 years ago I started to get a subtle knock coming from the bottom end of the motor. It also started to use oil between oil changes. When I switched to Amsoil, not only did the knock go away immediately, my now 170,000 mile engine consumes no oil between oil changes.

The best oil money can buy

I've been using this for some time and never had any issues what so ever.

use it in my truck so far so good

I use this and many other amsoil products for all of my vehicles since 1972 and have never had any kind of a pproblem. It's simply the best.

Great product and price !!

I find that the XL works great, and is not as expensive as the Signature Series. I change the oil every 6 months or 5-7000k miles regardless, so I see the XL as excellent for those of us who do regular fluid maintenance.