Amsoil
I run Amsoil 0w30 and their nano oil filter. I've got 7500 miles on this oil and just changed the filter and topped it off. I'm going for 15k before dumping it. The Amsoil Rep that comes to my shop is a friend so he does my oil analysis for me. The oil after 7500 miles is still good as new and there have been no changes in any of the pollutants in the oil.
I dumped my diffs and put in sever gear gear oil. And in a few more miles, I'm switching to amsoil ATF.
No leaks, no problems...
I ran thier diesel oil and filters in my blazer after 100k of conventional oil usage with 0 problems too..I honestly think the truck ran better with the synthetic oil...The oil was cleaner (less soot) the turbo didn't get "coked up"..Cold starts were easier.
I run Amsoil in my bikes too. For everything...New, old, rebuilt...Never had an issue.
I learn something new each day Rob comes to my shop. Did you know that there is no regulation, rule, or law that says what can and can not be called "synthetic"? If I'm not mistaken, Amsoil, mobil 1, and Rotella are the ony true fully synthetic oils out there. Many brands claim to be syntetic, but are castor based..
Check out the Amsoil site for more info..you'll be surprised to learn whats good and whats not...And you might change your mind about synthetics...
I do not work for, never have, and probably never will work for amsoil...I just trust thier products. :great: