Just read the article about/from Amsoil and I just got to say be careful what you believe or better yet, how you interpret what you read. A report prepaired for and pressumably paid for by Amsoil that puts its close competitors in an unfavorable light while their product seems to shine. Kinda like comparing golf balls and maker of golf ball "A" says of all the balls tested we were the only ones to have a blue stripe and all the others failed this test. The ONLY conclusion you can make is that golf ball "A" is superior. While the tests are likely accurate, I wonder if they are applicable and therefore relavent.