I am an Amsoil user and just got there monthly newsletter. I find it interested that every year they do this huge oil comparison, but never against some of the top brands, like Motul, Royal purple, or redline. They always do it against over the counter products, in which they better kick there ***. Thats why I pay more for there product. Just find it interesting.

 

They make their comparisons to name brands that the mass population will recognize. Most people have never heard of Motul. It's marketing. If Amsoil put Redline and RP results out there and the results are close people may reconsider buying Amsoil. If the RP is $1 cheaper and "almost" as good in testing that may be a lost sale for Amsoil.

We sell all 3 brands here, but from my personal experience I am an Amsoil supporter. I use it in my personal cars and always used it in my race engines, transmissions, and quick change diffs as well.