My roommate's dad frimly believe the old urban myth about FRAM+Valvoline=good, Pennzoil=sludge. He has enough of a mechanical and science backround that he's willing to listen and learn, so I want to at least try to convince him that oil and filters have changed in the last 40 years.
A. I know good information from greaseistheword's study and the oil filter forum to debunk the FRAM myth. However, any good journal or academic articles prooving that high flow is good in a filter would be nice.
B. I can't find a single VOA of Conventional Valvoline to compare to other oils? Please post a link if you have one!
C. Does anyone have a link that shows tha pennzoil changed their formulation from a (possibly) bad Group I formulation to the current Group II formulation? I assume it happened in the early 1990's?
A. I know good information from greaseistheword's study and the oil filter forum to debunk the FRAM myth. However, any good journal or academic articles prooving that high flow is good in a filter would be nice.
B. I can't find a single VOA of Conventional Valvoline to compare to other oils? Please post a link if you have one!
C. Does anyone have a link that shows tha pennzoil changed their formulation from a (possibly) bad Group I formulation to the current Group II formulation? I assume it happened in the early 1990's?