LouDawg
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LouDawg,
There are many things about oil and the respective brand that we cannot definitely say. But, the PP having better base oil has a better building block upon which to base an engine oil at the very least. In todays engines I would say that 5K miles are the absolute max for mineral oils due to the less stable base oils. At the special prices I see I use PP for 5K changes in my wife's 2007 Camry. One thing you cannot see is sludge in the crankcase. if you want to keep the car a long time, my thinking is to use very good oil. The oil pickup is very small in todays cars and it would not take much sludge to restrict oil uptake to the pump. Just my 2 cents adjusted for inflation.
Greg Harrison
I think the MC has a pretty high percentage of GIII base oil along with GII+ from what I understand, so I don't think it can be classified as a regular old mineral oil. Again, I go back to the used oil analysis on MC and PP and they both seem to be excellent, so is it worth spending an extra, say, $750 or so over the life of the vehicle on PP? (300K life, 6K avg oci, $3/qt extra are the assumptions here.)
Maybe...I just don't know. Now if I could consistently get PP at $3/qt, then I think it's a solid choice.