Intake Manifold Gasket May Leak Coolant or Engine Oil on Buick Roadmaster

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.

RepairPal Verified
Average mileage: 122,183 (83,000–175,550)
6 model years affected: 1991, 1992, 1993, 1994, more1995, 1996
11 people reported this problem
5 people shared problem details
At least one evident leak, front of engine, driver's side. No oil mixing with coolant yet.
coolant leaking from rear section of engine. The insulation on the firewall near the heater core is also wet.
1993 Buick Roadmaster108,000
Pressured coolant leak from intake manifold gasket! Expensive, even at Pep Boys!
1992 Buick Roadmaster175,550
One morning out of blue smelled coolant car making loud hizzing noise
Shop siad it had a small leak so I just replaced the gaskets.
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