Thanks for the link, interesting....
Where do you pick up Opti-Lube?
As stated in the previous post, I run Walmarts 2 cycle oil. About every other tank, figure there's always some left over after a fill up from the previous tank. Don't think I pick up any mileage, but it does seem a hair quieter.
Haven't done any extensive tests, but I think the 2 cycle oil makes a big difference in my folks' 7.3 powerstroke.
