What oil is everyone with twin turbos running?? I was told to use conventional VR1 20w/50. Just looking at what everyone runs. My oil analysis was great but all this stuff about 0 or 5 W for cold startups is confusing. I read all of this stuff on Bob is the oil guy and other forums and it seems like the experts say 0 or 5 weight is the best because most engine where is at coldstart up. I change every 1000 miles. I’ve run Rotella T6 5w/40 in the past as well. Also heard to run Mobil 1 15/50! Motor was built about 2000 miles ago.