Customer Ratings & Reviews

I have used Amsoil for engine oil changes for over 25 years and will continue to do so as long as I have a vehicle.

I use Amsoil products because of their quality and ability to protect whatever I use them for. In my opinion Amsoil has the best products available right now.

I switched to Signature Series shortly after purchasing my GT350. With all the talk of oil related issues across the various forums, I felt using the best oil I could afford only made sense. My car sees numerous HPDE track days every year and I have had NO problems with the engine related to oil, or engine problems whatso ever for that matter. I am very satisfied and would recommend this oil to anyone driving a high performance motor.

Amsoil is an amazing product. I use it in all of my engines

Great oil for my 400hp v6 Infiniti. Improved fuel mileage (who doesn't want that?) and seems to keep engine internals clean if the color of the oil change is any indication. Kind of expensive, especially changing at less than 5,000 miles, but worth it if it keeps my engine from blowing or seizing. Amsoil seems to be a step ahead of the other oil companies.

I wanted the best and amsoil with there years of testing and actually performing professionals use it is good in my book they proof them unlike the others oil companies

This stuff is amazing my engine is very quiet with signature series so much so that I recommend it to everyone I know that has a vehicle I’m seriously thinking about becoming an amsoil dealer because this oil is so good!!!! I will forever be an amsoil enthusiast

Was converted to Amsoil by my uncle a few years ago. I have an 05 Ford F150 Super Crew cab pick up, currently with 282,000 miles on it. When I first started using the 5W-20 synthetic, was having to add about a quart every couple of weeks to the engine. After my first oil change using Amsoil, about the 3 week, noticed a significant decrease in oil consumption, and a lot less valve train noise for which the 5.4L, 3 valve engines are known for due to the poor job Ford did using an inadequate oil pump on this particular engine. I recently installed a remanufactured engine that has had upgrades done to take care of the known issues with the 5.4, and gladly use Amsoil's synthetic oil in it, and always will.

This is the best oil on the market worth the purchase price.

I've been using this oil for many years now. I have a Toyota Corolla and I can go a full year without loosing a drop of oil. In part the engine is mechanically sound. Used to use on 2007 Scion TC until car got totaled and 5W-30 on prior 1996 Mystique.

Been using Amsoil in our Honda cars and SUV’s since 2008. The hybrid and SUV have been flawless.

This oil is great in my GT350 best oil I have ever used.

I’ve switched to Amsoil and I won’t look back love this oil.

I've got almost 550,000km on my car and it runs great. Love Amsoil products

I've been using Amsoil for years and love there products. Would highly recommend them to anyone that wants to protect there ride.

I tried to take advantage of free shipping recently and entered the promo code on the website. I even got a message saying it would be applied at checkout. It was not. The oil is of excellent quality and it was shipped quickly, I'm just disappointed that their "deal" was bogus.

Good product long interval change.

I drive an average of 66 miles a day just for work alone. This product definitely goes the distance with adding after 9,000 miles & a little later on totalling 3/4qt more to top off for the entire year. The color reminds me of coffee that seems to suspend & encapsulate particulate well within so there wouldn't be much of any gludge from settlement. A guy I know did an acidic test at 14 months to see how it holds up & it passed even though it wasn't recommended to run past a year. I use magnetic drain plugs & the metal goop was extremely minimal. It's just the best option for those who drive more than the average Joe. If you work a ride share company, this is your brand for sure. On a side note: The expended product can be a very useful chain saw lube as it seems to minimize blade track wear even when there would be massive miles on it. It's just amazing oil.

I have been using Amsoil products in my vehicles for quite some , and always have been very happy with the quality and performance of your products, My only complaint would be, as you reminded me several times "to use my points" because that promotion was ending soon, when I tried to redeem them during my last order, I was either doing something wrong, or the website wasn't allowing me to use them, it was a minimal amount, so it's not a huge deal, so if I had one complaint, then that would be it, Hey, YOU ASKED!

I've used these products in all my atvs,motorcycles and vehicles for years and never had a problem I've even took apart some of the engines and noticed less ware on cylinder walls and other parts very expressive