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1966 Mustang 302 oil pressure question

8806 Views 5 Replies 4 Participants Last post by  astumpf
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.

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Im going to try to check the oil pressure today with a gauge. Last night I realized after I posted the thread that I didnt have this problem till I changed the type of oil filters. I was using fram but, they where blowing oil seals then I went to motorcraft no seal problem but oil pressure drops.
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