I had the same sort of problem, but mine was a little worse....actually a lot, so i doubt it is your problem, just thought id share it though. I had too much bearing clearance around the crank. when the motor heated the oil up, it became less viscous. instead of seeping out of my bearings, it was like niagra falls. i do agree w/ greek on the releif valve. i put in a high volume oil pump, and run about 70-80 psi on start up and about 60 when engine is at 190, the the 10psi/1000rpm is a rule to live by. you may try an oil pressure gage w/ a manual sending unit. i think they are only about $20 from autozone or oreilleys
1966 Mustang 302 oil pressure question
I have a question about my oil pressure gauge. My oil pressure runs about in the middle of the guage when Im driving down the road.It runs a little below that when it just idles. My question is when the motor warms up i can stop at red light or just stop and my pressure gauge drops down as low as it can get. It doesnt ever drop below the low range but it is right there on the line. This motor has about 500 miles on a rebuild. My buddy told my run 20-50 in the summer time. Any advice would be helpful thanks. Im running 10-30 castrol right now with a motorcraft filter. here is a pic showing what i mean with my gauge.
