Originally Posted by
G.Seabrooks
Getting my oil changed today on my 04 crossfire, an the guy was trying to get me to switch to a new synthetic oil called Royal Purple, said it was the best thing out. Never heard of it. Told him Id wait. He also said my car calls for 5w40 as well as 0w40. HAS ANYONE HEARD OF EITHER??
I think newer Mercedes products are now using 5w40, and I understand it's OK to use in our cars too.
I've heard of Royal Purple, never tried it, and I've never read anything about it. Sorry.