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Low readings

Consistently low readings, compared with the one in the car handbook, could indicate a fault in the gauge itself or in the instrument panel, but it is more likely that the main engine components are becoming worn. Don't worry if the reading drops by only 5psi or so during a long run in hot weather.

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How an oil pressure gauge works

The oil pressure gauge is one of the most important instruments in a car. It acts as an indicato...