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.
Intake Manifold Gasket May Leak Coolant or Engine Oil on Chevrolet Astro
Average mileage: 143,221 (98,000–179,884)
Engine affected: 4.3L V6
10 people reported this problem
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Viewing 1 - 2 of 2 problem details
2002 Chevrolet Astro - 4.3L V6 179,884 mi, Visitor
I have external cooling lake on the right hand side of the engine that start like 400 miles ago very little now it's leaking out a lot more
2000 Chevrolet Astro - 4.3L V6 98,000 mi, Visitor
Antifreeze in oil