oil pressure and different weight oils

moparlover said

I'd go with the 20/50. was the oil pump brand spankin new?

on a new engine you should be getting 60-70 cold then when hot drops down to 20-30

13lbs hot idling is pretty low.

if it's a brand new oil pump, what about the pickup. any chance it's up against the pan or loose or cracked or something?

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yeah, every single piece in the motor is brand new. new Melling HV pump that has been enlarged, ported, and polished. the pick up is a new Milodon that is made for their 8 qt pan. it fit nicely and had proper clearance to from the bottom of the pan. even if it was touching the bottom it would still pull the crap out of oil, because it has a spacer on the bottom that keeps the screen from touching.

the 13lbs was hot while idling at only 800 or 900 rpm. at 1400rpm it is between 20 and 25lbs.