hi people just wondering if anyone knows the best oil to use in my s2 i'm currently using millers fully synthetic 5w/40 but then i've been told to use 10w/30 by my mate and mobil one 0w/40 by someone else. but neither of these people have actually owned an rs. any replies from experience would be great oh and if it makes a difference i'm running approx 200bhp@17psi cheers in advance.