- Dec 28, 2014
Regarding valve coking — I don’t know which would be better, but Mobil1 does seem to do some extensive testing...I imagine Castrol does too. Who knows? Engine design...PCV valve system, dual fuel systems, I think play a big part in it.I think you're right. It was something like that with the bearings and my 2014 VT doesn't seem to be one of the problem cars. What you described about the crank bearings makes me feel a lot better.
You think Mobil 1 or Valvoline will have any better effect on that valve coking? At this point it sounds like it's a 6 to one, half a dozen to the other kind of preference. All high quality oils seem to pretty close anymore.