Originally Posted By: Panzerman
Ok, now let's see the same engine on Conventional oil which has the same API ratings.
This
How can u prove if there was a bit more varnish or some sludge buildup the car wouldn't reach its max life? I know there's tons of vehicles out there not maintained well or at quick lube places with well over 300k being run on bulk conventional and jobber filters. My brother in law actually owns many examples of these for his private security company. Usually something else causes the car to be scrapped b4 the engine goes out.
But hey, if it makes u sleep better...