The cause is wear on the engine, plain bearing motors wear out and their tolerances open up allowing the oil to go through more easily. The solution would be to change the oil and filter and choose an oil of heavier viscosity. My Chevy truck does the same thing, 140k miles and I will deal with the low oil pressure at idle if and when the engine dies, and not a minute sooner!
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Thursday, January 20th, 2011 AT 4:31 AM