I'm planning on changing my oil, gear oil in the tranny and in the diff. tomorrow and would like opinion on certain brands and weights of fluids that are recommended. I autocross as often as I can so my drive train takes a beating. I use 10w30 mobil1 Extended performance(15,000 mile oil) fully synthetic and change every 250/400 miles, but am seeking possible brands that perform better than what I use. I hear the Royal Purple releases some power, but I'm more in it for the protection and sludge resistance. Is RP good stuff, or is it just a gimmick that'll ruin my engine? In all, what are your suggestions on engine oil and gear oil and what weights should I use?
Follow Ups
Opinions sought on oil and drive train fluids. - WAGGZ19:18:23 07/11/06