pennwalt

Hey folks, I came across this blog while looking for the best oil protection for my 2008 5.4 L after reading about all the issues with cam phasers. This guy tested over 150 different oils and you can search his blog to maybe find the oil your using and see how it stacks up. I realize he's a G.M. guy but, he has a lot of good info on his blog. Check it out, I think you might be surprised where your oil ranks.
https://540ratblog.wordpress.com/201...-test-ranking/