Customer Ratings & Reviews

I've used Amsoil Signature Series 5W-30 for years and will continue to do for years to come. I first started using it simple as an avoidance to constant oil changes. Putting around 25-30,000 miles a year, it made more sense to change the oil once and the filter every six months, rather than wasting time changing conventional oil at every 3,000 miles. Many told me it wasn't safe to do so; however, I've never had any issues doing this. First car...1993 Chevy Corsica 3.1L V6. 236,000 miles when traded. Engine ran perfect, car body rusting out. Next car...1998 Subaru Outback 2.5L 4 cylinder. 263,000 miles before the body rusted apart. Currently using in 2004 Subaru Outback 2.5 around 180,000 and Dodge Ram 2500 5.7 Hemi 130,000 miles. As you see, long engine life with minimal time required for oil maintenance/changing, not engine issues, various engine sizes. All of these vehicles have their oils changed once a year. Filters changed at oil change, and then again at six months. Strongly recommend, especially if you like the simplicity of changing the oil only once a year or put many miles on each year.

I have been purchasing Amsoil products for about fopur years now, everything I own that has a motor and transmission contains Amsoil products. Great products and a great price form a great company. Will always buy my supplies here.

I've been useing amsoil oils for 20 years I wouldn't use another brand if I was stuck out of oil somewhere

Wouldn't use anything else in my new Focus RS! I run Amsoil in all my toys! Cars, Ducati's, and waverunner!

Instead of changing oil and filter 3 times a year on my wife's 2010 Impala, I just change it once. And I am using a better quality oil and filter, when I use Amsoil !!! thanks

Use this oil in a Ford Raptor that travels cross country. I trust this lub for high mileage protection.

Fast service, knowledgeable about product, fast shipping.

Yes I would buy again been using this product for years about 20 years

I use thus product in my recently purchased truck. Mileage got better and engine ran smoother. I love it. I have been this product in mg last three used vehicles with outstanding results.

Oil change intervals last more than six months. I prefer AMSOil 5w30 Synthetic Motor Oil over any other. "True Synthetic."

I run this oil in my truck and car. I swear by it!

227,000 miles on my 2003 Chevy pick-up. No oil consumption.

Saves me money in the long run. Less oil changes. Great performance!

got another 70000 miles out of it .I was sold been using it in every vehicle sence. When you do all your own service work yourself you notice where n tear on internal parts, and i've got to say the products from amsoil When you rely on your truck to make a living and cant afford break downs. You only put the best product in it. I've used other products in the past. but one slipping transmission and switched to amsoil products. Well offer the best protection i've come across "greasy" Hands Down Matt.S.

Overall best out there

I use it a 1998 CHEVY VAN WITH 200,000 MILES.rUNS GREAT ,EASY STARTS ON -30 DEGREE WEATHER WITH INSTANT OIL PRESSURE.

I use it in my car,change my oile 1 time and forget it

Easy to use

I have been a long time user of AMSOIL products in everything I own and I have found that the 5W20 is the absolute best engine oil. It has almost the same low temperature benefits as the 0W20 but less burn off than either the 0W20, 0W30 or 5W30 engine oils. It is the only oil I use for my customers now.

When I bought my '13 Subaru Empreza, the dealer said that the engine must use synthetic 0w-20 oil, so I of course chose Amsoil's 0w-20 Signature oil. FYI this car is suppose to have a high oil consumption engine, but I have never added any oil. Another thing the dealership told me is NEVER EVER USE MOBIL 1 oil as it will wreck the automatic cam timing mechanism.