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To my other question, is ZDDP still a positive in roller cam engines?

As in how thin it is at startup on an older V8. I dont know anyone personally running anything less than 10W-30 in their old performance cars, still a lot of folks seem to like 10W-40 and the 20W-50. This is why I joined as well because conventional information often seems a lack in basis.

Ill have to dig into more stuff, I didnt even think of using a formulation that goes with 0W.

Hey all, I have had some engines built the last few years with the shops recommended oil included. This latest go around is a roller and has been filled with Klotz 10w-40. I did a little reading on it and im not exactly sure im best using this to drive on the street with. Previous build was...