Problem Reports » Intake Manifold/Valve Cover Gaskets May Leak Oil

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Mercury Grand Marquis

 

Report: Intake Manifold/Valve Cover Gaskets May Leak Oil

Mercury Grand Marquis Problem
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Model Years Affected: 1990, 1991

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It is not uncommon for the intake manifold and/or valve cover gaskets to develop a coolant or oil leak. Leakage from the intake manifold may result in coolant in the engine oil. Coolant mixing with the engine oil severally impacts the lubrication ability of the oil. Internal engine may result if this condition is not repaired promptly.

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