If the oil pressure is really zero at idle, yes it will hurt it a lot.

Check with a mechanical gauge to verify if the problem is a gauge inaccuracy or the engine. More often than not, the problem is the gauge, and the problem is the sending unit.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record