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What is the oil pressure for a 1999 Chevy Tahoe with 350?

The ideal oil pressure for a 1999 Chevy Tahoe with a 350 engine (a Vortec 5.7L) at idle is generally between 10 and 20 PSI. At operating temperature and higher RPMs (around 2000-2500), you should see oil pressure in the 30-50 PSI range.

Important Considerations:

* Engine Temperature: Oil pressure is affected by temperature. Cold oil will have higher pressure than warm oil.

* Engine RPM: Higher RPMs generally mean higher oil pressure.

* Oil Viscosity: Using the correct oil viscosity (weight) as specified in your owner's manual is crucial for proper oil pressure.

* Oil Condition: Old, dirty, or low oil will significantly impact pressure.

Don't rely solely on a gauge: While the gauge gives an indication, it's possible for the gauge itself to be faulty. If you suspect a problem with oil pressure, it's best to have a mechanic use a pressure gauge to get an accurate reading. Low oil pressure can severely damage your engine.

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