I am not an expert just a Chrysler product abuser for most of my life so take this with a grain of salt. I have tried all kinds of oil from used redline out of my old employer's SCCA Trans Am race car to Wally Demarto 5-w30 to Kendall to Mobil 1 synthetic to the cheapest fleet brand they sell out here in ranching country.

I never have had an oil related failure.

This is all stuff that is kept below 7000ish rpm. Maybe 72-7300 depending on which tach you believe. With my new 511 I might get some ZDDP to add to the fleet oil and will definitely let it warm up to at least 120 before beating on it.

Again, take my experience with a grain of salt.