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Re: Oil pressure gauge fluctuates
Several possibilities.
Most likely for the age the oil pump is going out.
A bad gasket might have let anti-freeze get into the oil. Just a small amount can mess up the ability to keep up pressure.
The oil pickup tube or the pickup screen is clogged.
The pressure might be ok and the sender is actually going bad.
The best thing to do is find out what the real oil pressure is by removing the electric sending unit sensor and putting in a true gauge. A cheap one can be gotten at a store like harbor freight and there are tons of videos on how to check the pressure on youtube.
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