............. see any production performance car since oh.. the 1950's
If I repost the proof from a GM lubrication engineer who says exactly what I am staying will you consider it or should I save the effort? Because, as mentioned... the engineers will do things for a reason.
I would like to see that data. Was the data from the engineer written before or after oil formulations were changed to minimize zinc due to emissions changes?
Today's motor oils are not formulated the same as what our fathers used. Since the formulations changed relatively recently talking about a 50 year history is like comparing apples and oranges.
