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. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.
Intake Manifold Gasket May Leak Coolant or Engine Oil on Buick Skylark
Average mileage: 106,400 (14,000–158,000)
Engines affected: 2.3L 4 Cylinder, 3.1L V6
10 people reported this problem
1995 Buick Skylark - 3.1L V6 158,000 mi, Visitor
Thought to be head gasket, though not blowing white smoke and didn't smell like coolant, though there was about 10 qts of oil/coolant chocolate sludge in it. About to repair it Friday.
1997 Buick Skylark - 3.1L V6 14,000 mi, Visitor
Leaking coolent from intake mfg gasket at 14000.miles it was leaking when I bought car at 14000.miles I repaired it now has 60000 still running fine Joe
EVERYDAY I PUT IN 1 QUART COOLANT AND IT DOES APPEAR TO BE A MANIFOLD ISSUE. WHERE I PUT THE OIL IN IT APPEARS TO HAVE A BUTTERSCOTCH PUDDING SLUDGY MESS AROUND THE RIM. THIS COULD BE A SIGN.