I decided to try out RP after reading comments about using GL-5 lubes in the AX-15 at www.stu-offroad.com. I went with RP because of all the great things I have heard and after reading the product data sheet found here http://www.royalpurple.com/gear-oil-pp.html
Results? I should have stuck with the Mobil1. My AX-15, like many others, is a pita
. I thought the Max-gear would be of benefit....it's shifting rougher now then it ever has.
I have also thrown the max-gear in the diffs....so far so good there.