Car Problem Reports

Buick Regal Intake Manifold Gaskets Can Develop Engine Oil Leaks

Buick Regal Problem
11 Reports
Me Too

Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995

Engines Affected: 3.1L V6, 3.8L V6

Average Mileage: 103,250 mi (71,000 mi - 145,000 mi)


The intake manifold gasket can develop external engine oil leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue.

  • Visitor, , 3.8L V6, 71,000 mi

    Oil mixing with coolant. Bad intake manifold gasket.

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  • Visitor, , 3.1L V6, 82,000 mi

    This is also time to install new injector seals. Check for a coolant airlock via "coolant line valve, (same size as a tire valve)" after evac. , otherwise chance heat damage to heads . Use engine oil flush, siliconed areas have to be clean. Do a second oilchange a week later, three years later, change out your expired acidic gasket eating coolant .

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  • Visitor, , 3.8L V6, 115,000 mi

    Rough idiling and running. Oil in coolant. Smoking.

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  • Laura1402, , 3.8L V6, 145,000 mi

    got my oil change a few weeks ago and was told i need a new intake manifold gasket, because oil is leaking into my coolant

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