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Modern electric are just as accurate as a mechanical. You can even get a full sweep elec if you want. Use either, your call.



Modern full or short sweep electric oil psi gauges are just as accurate as the mechanicals but keep the oil out of the passenger compartment. I still went with mechanical, but I just ordered a braided steel line to replace that nylon hose all the oil pressure gauges come with. I always have a spare known good mech oil psi gauge sitting in the garage I can swap in if something goes wrong, no spare parts for an electric oil psi gauge, so I stay with the mechanical.

Are you sure it's not a leaking gauge connection? Check the hose connection at the block and at the gauge for leaking oil. Also check the nylon line for kinks/cuts. A low reading could be the result of that. Or the gauge itself could just be defective. Or you really could have that low of oil pressure.