Ok, so with my DSM going to be here in about a week and a half, I have been planning/contemplating everything I am going to do to it. First off its going to get all the maintainance done. One thing I'm not sure on yet is the oil. Anyone use that new Quaker State Q stuff? Any good? What about Royal Purple, worth the $5.50 a quart? The Royal purple will probably happen later when I get bigger turbo or do anything between the valve cover and oil pan, but until then I will probably go Mobil 1. I know, I know, detergent blah blah but I know of quite a few people that use Mobil 1 and everything goes fine. Any comments/suggestions?