Who made Bob the
oil expert?
For me it's nine quarts of 5W-30 Redline (1,200 PPM ZDDP) plus 4 ounces of Redline ZDDP additive which gets me to about 1,450 ZDDP.
I've been running 55 PSI hot at 2,000 RPM for 10 years now with no problems.
Bob (not the
oil guy)