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Old 04-10-2019, 03:39 PM   #8
Drbrown
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Join Date: Oct 2013
Location: Glens Falls NY
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Default Re: Flathead oil pressure change

2 x JSeery's recommendation to use a mechanical gauge.

I think Ol'Ron would say 15 lbs hot is okay at idle. At Idle, my mechanical gauge starts at about 65 lbs cold and when hot reads abt 20 lbs. I use 10w-30.
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