Why Use Royal Purple Nov 8, 2005 15:10:20 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Luis on Nov 8, 2005 15:10:20 GMT -5 Ok everyone Here is the link to Royal Purple tech and gives you the info on there oil and what it does to your engine. Enjoy www.royalpurple.com/techi/whyrpi.html