Customer Ratings & Reviews

I've been using AMSOIL for year's in my 2002 chevy Diesel ,and other car's ,2003 Pontiac VIBE GT [now that's a sleeper car ] and now this new'er 2009 Pontiac VIBE .they ask for the light 5W20 or 0W20 oil so nothing better then AMSOIL 5W20 with a filter . WE get it all here in the middle of the country ,Hot 38C to -40C . I do some personal road trip's 20 hours at a time going into the western mountains , this oil can take it .

The best oil out there

Been using Amsoil 5w30 for years now. Never had an engine issue related to lubrication. And the extended oil changes factors into the price. Highly recommended.

Sig Series is great product! Also ordered upper cylinder lube. Cap hard to get off and seal remover tears and have to use needle nose pliers to get off. Poorly designed. Contacted customer service previously but didn’t seam to care. Will likely purchase other brand of upper cylinder lubricant since it’s a pain to open.

I’m a long time Amsoil user, both for my business (pest control) vehicles because it made sense and personal vehicles for the same reasons.

The best oil for Turbo and naturally asperated engines. You engine will outlast the vehicle, with extended interval as a plus

2,000mi in on this oil change, go to check the dipstick and the oil still looks almost new. Compared to what i used to use Castrol edge high mileage, its a welcome change. If your going to spend the money, spend it right.I have an 03 silverado with 228790mi and I needed an oil to make it last as long as it can, I think I found it with the signature series oil.

Amsoil is the best motor oil money can buy! Been using Amsoil for over 20 years. Every vehicle engine I’ve used Amsoil in, has lasted a very long time with zero failures.

I've used several different products (i.e., automotive oil, 2-stroke marine oil, 2-stroke small engine oil (e.g., for chain saws, leaf blowers, etc.), marine lower unit lube, etc.) for over 20 years. In my mind they are the best in each application else I would not be paying the premium price. Top of the line products are cheaper than replacing vehicles, marine engines (2- and 4-stroke). I believe in Amsoil and I recommend it to others.

Been using Amsoil for about 20 years , motors just last a lot longer when using this product. If its a gas engine I use amsoil , If I had a diesel it would use Amsoil as well. It is just the best .

I purchased a new 2017 GM truck with a 5.3, drained the oil as soon as I got home from the dealer. I’ve used 0W20 from day one without any worries about the DEXOS high jack from GM. In my world if it needs oil, its Amsoil, I’ve used it for decades. If you own a GM product, don’t fall for the hype they push, take comfort in knowing this oil is the real deal and will not fail you.

Been using Amsoil for years, along with filters. Oil feels like it doesn’t need changing when I do change.

I won’t use any other synthetic oil other than Amsoil and I would highly recommend it to anybody looking to find the best synthetic oil

Amsoil is the best oil on the market for synthetics I will not use any other synthetic nor will I go back to straight regular oil. I would strongly recommend Amsoil to anybody in the need of a pure synthetic

I do not use any other product in my vehicle it keeps the engine super clean.

Absolutely love this stuff I run it in my 2006 Saab 9-3 and my 2003 Saab 9-5 and they run like a dream cousins ask for anything better.

In my cars there’s only 1 oil that goes into, AMSOIL....this says it all.

With modern engines maintenance is the best preventative service a vehicle owner can do. Heat control and lubrication are just two of Amsoil qualities. Repairs are very expensive so maintenance can be your best investment.

This oil is a very good product, get very good mpg and engine protection. Will always use it only one for me

Here in Indianapolis Indiana, during winter temps can get below 0, Seems to flow very well at cold startup.No cold start ticking like with my old oil.Thanks