Customer Ratings & Reviews

AMSOIL is the only oil I have used in everything since 2008. Lawnmowers, Harleys, and all other vehicles. I I own and restore classic Mercedes Benz and currently have five both gas and diesels. The cars range from a 1983 380SEC with 230k miles to a 1990 420SEL with about 170k miles. The 1990 420SEL was a more recent acquisition and had what I think was a stuck piston oil ring as it was using about a quart of oil every 300 miles. I changed the oil and then drove it a 1,000 miles running about 75 mph the whole trip. I drove it 300 miles then fill the gas and had to add a quart of oil each time. After getting it to Florida (this car stays in Florida) I have ran four tanks of gas through it without having to add any oil. I really think the AMSOIL is what broke the ring loose as I did not add any additives. There is really no way of knowing if it was the oil, or the fact that I drove it so hard for that distance. Either way I will always use AMSOIL!

Have used the last two oil changes in a low mileage auto, and the smoothness of the engine is satisfying.

Quick and easy shipping.

Buying an oil change kit from Amsoil was a great deal! I’ve used their oil for over six years and finally got an account with Amsoil to save money. I use Amsoil in three of our European vehicles and wouldn’t use to anything else!

I run amsoil in everything from my streetbike to my daily definitely would recommend

2015 vdub has 130 on the clock still runs well . Ams oils since new . No engine or emissions related problems yet

Love the service.. Great Job! to all of the team.

I only use AMS oil! Been using this in my race cars and daily drivers for years. Can’t beat it!

Very good

I personally have run this oil in all of my diesel engines for many years and would recommend it.

I've bought this oil for summer time adding. 500 cm3 ( 500ml ) above normal level will not hurt engine, but will effectively decrease engine temperature. I do believe in AMS quality and recommend this oil every one.

Have had great results with this oil, live in Indiana and the winters here can be pretty rough, the cold starts were phenomenal Great Product! Had to change valve cover gasket last summer and the inside of the engine looked Awesome A+++

Amsoil is a very well known and respected brand. In oil testing, it consistently performs better than any other oil. The down side is the price. Amsoil is one of the best and you pay for it. So if you have the money, I highly recommend it. However, I have also used other brands such as Royal Purple and Pensoil. The royal purple I used contained Synerlec and was on par for price with the Amsoil signature series. However, in driving I had better gas mileage with the royal purple and slightly better performance. For my less expensive vehicles, I typically use Pensoil platinum. It is about half the cost and performs nearly as well. Even in testing it came it rated slightly behind Amsoil but at half the cost, slightly behind is fine for my less expensive vehicles.

I've used various Amsoil products for years and have never had a mechanical engine problem using Amsoil. I'm currently using this oil on a particular European diesel engine and performing oil analysis at every oil change. Results have been improving since switching from factory recommend oil to this. I'm getting lower aluminum wear numbers, and lower iron wear. Viscosity and TBN numbers have held up well to 5k miles and the oil analysis reports comments have stated oil was safe for continued use. I still change at 5k because the engine still has it emissions intact(EGR, DPF). Considering that, i'm still amazed at 80k miles that the oil isn't black as coal 2000 miles after an oil change.

Great products and quick shipping. I have been using Amsoil for almost 15 years and very happy with my vehicles performance.

I’ve been an AMSOIL customer for over 30 years and recently decided to run AMSOIL FS Synthetic European Motor Oil 5W-40 in my 2021 Alfa Romeo Stelvio Quadrifoglio (2.9L twin-turbo). Within a short period of driving, it noticeably reduced a noisy valve train on the right bank and the engine felt smoother overall. To validate the change, I also had the oil analyzed by a professional lab — results came back with all levels within normal range, and the oil was deemed suitable for continued use at the time of sampling. Excellent product and performance. Thank you AMSOIL!

This is absolutely the best motor oil that I've ever used. I highly recommend this oil for all of your vehicles. Moreover, I joined the Amsoil club and took advantage of the best pricing.

I run this oil in a 2010 Sprinter with the OM642 diesel engine. I do regular oil samples, and the results are very consistent. I currently have 230,000+ miles and the engine runs great!

Amsoil, best PAO base and additive package. Top tier for lubrication.

Took noise out of motor