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

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: 113,338 (90,000–180,690)
Engines affected: 3.1L V6, 3.8L V6
7 model years affected: 1994, 1995, 1996, 1997, more1998, 2001, 2002
9 people reported this problem
2 people shared problem details
1998 Buick Regal- 3.8L V6180,690
Check engine light came on and started flashing. Car ran rough. When shut off, wouldn't restart. Intake manifold gasket leak. Antifreeze in oil. Would have had to replace the intake manifold gasket, plenum, spark plugs, flush antifreeze system and change oil. Decided not to fix it, sent it to salvage yard.
2002 Buick Regal- 3.8L V690,000
Oil in radiator; antifreeze in oil.
Related Items:
The intake manifold gasket may develop external engine oil leak. The manifold gasket will need...
The intake manifold gasket can develop external engine oil leaks. The intake manifold will need...
My 95 Buick suddenly started using oil. Oil is appearing in my coolant reservoir. This car ha...
I had large amounts of clean oil ending up on the ground very quickly. I was charged $750 by a...
I have a 2001 regal ls. Last few days the car has been making a grinding sound by the belt asse...

Related Content