Oil can drive you crazy, but I tried this is my special, 81 dirt track replica, street legal Camaro. Running a 1970 350ci LT-1, 11:1, flat tappet, 400+HP. Cold oil pressure @ 2000rpm=50 psi. Hot oil pressure, @ 2000rpm=46 psi. I think that says a lot! Just changed my BMW M roadster over to the same stuff.