The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
Car Problem Reports
Pontiac Firebird Intake Manifold Gaskets May Leak Coolant or Engine Oil
Pontiac Firebird Problem
Engine Affected: 5.7L V8
Visitor, 1993 Pontiac Firebird, 5.7L V8, 90,400 mi
Intake leaking oil. Dripped on distributor so I had to replace it as well. Lasted 20 years so not bad