I use this oil first when I switch to Amsoil Signature or other 100 percent synthetic oil. I run it for about half to 75% of the oil change interval, and also add about 4 oz of Marvel Oil. This cleans out the engine well and preps it for the premium synthetic.

So far so good, mpg already improved, car feels smoother and runs better. I'll stick with this brand for a while, actually thinking of going into business with them.

Great product at an affordable price

I prefer using Amsoil to protect my engine in our high heat climate. I prefer the convenience of a longer drain interval allowing me more leewya in when I'm not able to change every 5k miles.

Been using this oil in my 19 Expetition and 09 Civic for the last two years. Engine runs smoother and has 8-10k mile service internals with no oil consumption issues.

I have been using Amsoil since 2008 in all my vehicles and motorcycle. I trust the product and want to protect my investments with the best.

Good oil Take care my engine

this stuff is great, i use it in my mowers, trust it and its protection

I use Amsoil in all of my vehicles. It is a little more money then the conventional oil you by at you local part store but is well worth every penny plus the warranty is worth it alone

Great product, can’t go wrong !

I've been using AMSOIL for over 15 years now. My brothers have finally started to listen and this was a birthday gift for one of them. I can't wait for his reaction because his car has 100K on it and he's probably been using all sorts of weird stuff. Or even worse may have went to a quick oil change center where that oil is very questionable. I know he's going to feel the difference in how smooth things becomes and it ups efficiency. Keep up the great work AMSOIL, you really are the best!

Great oil for maintenance. I got my first new car and will be feeding it only with AMSOIL. It's simply the best and gives piece of mind that my new ride will last a lot longer than all of the used vehicles I've had. That said my first use was in a Jeep with over 100K. I switched to AMSOIL and it made a dramatic difference in ride quality and efficiency. I ran that up to 225K before I sold it.

So far so good, fast delivery to my front door. First time using Amsoil, look forward to using more of your products.

Could be happier

Works great I noticed easier startups when cold.

Very good oil ! So far my car runs amazing

Absolutely amazing product recommend it to everyone I will only use amsoil products from now on

The price of this oil is comparable or better than the brand I used before. This oil come very highly recommended. Easy purchase and fast shipping.

I have not changed my oil since receiving the order. I was very happy with the method of ordering, the help I received and the quickness of the process and delivery.

Excellent synthetic oil. With Amsoil membership discount, is competitive with conventional oil prices