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I have a bpt setup and recently my oil pressure at idle pretty much drop s to 0 or below and when running it is around 12psi.

oil cunumption is very very minimal.
i am using but have been using mobil 1 extended syn oil.
what could be wrong?

thanks

Before getting into diagnosis, what type of (brand) oil pressure gauge do you have?

Make sure that there are no leaks at the sending unit, which I would imagine you have an oil pressure gauge teed off from. Or do you have it teed off somewhere else...cyl head, etc.?

i have it in place of the stock sender. it has been there for yrs.

autometer

today i just noticed that with the car on but before cranking the needle of the autometer does not go to 0. Is that normal?

Thanks

I would take it to shop to verify oil pressure. Have them install a gauge to make sure there are no problems. You may have a gauge malfunction.

hmm clogged bypass in the oil filter... or bad oil pump... try to get a shop to test it first tho