I have maybe 6000 miles on a a rebuilt 428. New bearings and rings- the machine shop built the short block. I'm on my 3rd (?) oil change and noticed that the oil still has a slight shimmer when I run my finger through it.
It's a fresh rebuild, the first rebuild ended in a chewed up rod bearing after 200 miles.
Running a hydraulic roller cam with HS roller rockers on Edelbrock aluminum heads w/ restrictors. Oil pump is a precision pumps HV unit, I get around 17-20 PSI oil pressure hot idle and around 62-64 PSI hot at 2800 RPM on the freeway. Oil pressure does not seem to have changed during this 6000 mile span. I do remember using a liberal amount of the ARP assembly lube when I build the long block.
I've been using Rotella 10w30 and a motorcraft oil filter this entire time. Should I just keep changing the oil in shorter intervals?