Posted by Bob in N.GA [172.70.134.50] on Saturday, February 12, 2022 at 09:09:04 :
When my 230 and 251 flatheads are first started and cold, the oil pressure gauge pops right up.
After a few miles and warm up with 30W oil, the oil pressure will still rise with half throttle--but, at idle seems to drop to 5 or less.
Is this OK ? On these older engines, whether rebuilt or having some age, are they still getting the pressure they need at idle ?
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