I am using this oil in my 95 GMC Sierra SLE. with a V8 5 litre. The oil makes the engine run smoother and quieter. Gas mileage seems better. The gas needle doesn't drop as quickly. I have been using it for 2 months. so far no leaks, no oil consumption. Acceleration is good.

I use this oil in my high mile Plymouth with 175k miles on the engine without any trouble with lots of highway miles. thanks

I run AMSOIL 10W/40 in both vehicles a 2006 Tundra Limited, a 2012 Dodge Caravan and my John Deer 300X Riding mower and in every vehicle I have owned over the past 40 years. When 50w AVOIL was available I ran it in my 1977 Cessna 172N.

Put 7qt. in my 68 Charger and I am very happy with results.

Not the cheapest, just the best. After tearing down my motor after 250hr for rebuild/refresh, my rod, cam, and crank bearings still looked new. Keep in mind this isn't a pampered motor. It gets run hard, yet the rebuild seemed completely unnecessary.

I have used it in my durango for years.It is a great synthetic oil

I love the piece of mind knowing when I crank up my truck in the morning there's no dry starts

I am a firm believer in Amsoil. This oil helped me out with my 75 chevy 350. It took away an engine tick. It also runs and idles a lot smoother. Excellent product.

i love the product , i drive less then 12,000 miles and so i have been changing my oil once a year , since 2007 when i overhauled my dodge diesel engine. in fact it's cheaper then running Dino oil ,.. and changing it every 3,000 ~ 4,000 miles. thank you for the grate product. GA.

I've been using this oil in my drift cars for years now, and have gotten to tear a couple motors down for rebuilds ( due to low compression) and got the opportunity to see that the oil has Done it's job! It kept the engin clean inside, and protected the bearing like it was supose to!

My application is a 2013 Toyota RAV4 with 15k miles. I use 10w-40 Amsoil and change just once a year since I normally drive about 3800 miles a year anyway using Amsoil Full Synthetic.. I feel more confident using this and changing it myself the first several years as opposed to letting Toyota change it for FREE with regular oil every 6 months. Basically I can do it myself once a year and still save time from waiting around at a stealership lobby and have confidence I will not sludge up ever with better protection. Not to mention I know I do it right and tighten everything back up. I personally had some bad experiances in the past and do not trust them working on my car since I bought it new. One time the spark plugs were apparently never tightened as an example on another new car we purchased during a service.

Excellent product.

I have a z turn mower with over 3000 hrs on one of the pump I have used this product to extend the life way past normal factory suggested hrs

It's a great product, I even get,an extra 2 miles per gallon which helps a lot

Use this oil in my big block mercury marine 454 inboard engines. Makes them run smooth and quiet. there is never any problem starting these engines, even after being stored for the long Canadian winter. The oil also help performance with at least a 20 hp power increase!

I'm 60 years old and have used every possible lubrication known to man, Amsoil is by far the best.

I use the Amsoil high zinc formula in a high reving 4cyl application . The oil pressure and temp are never an issue while on the track and I like the extra protection that the zinc provides for the camshaft and shim buckets.

I use this product in my work van with an oil bypass filter along with my stock oil filter, my van has over 340,000 miles and has had the oil bypass filter since it was new and I truly believe that Amsoil has kept me on the road this long.