Oil Leaks From Intake and Valve Covers on Buick Riviera

Problem Description and Possible Solution

The intake manifold and valve cover gaskets can develop external engine oil leaks.

Problem Data
RepairPal Verified
Average mileage: 184,120 (138,000–230,240)
4 model years affected: 1990, 1991, 1992, 1993
6 people reported this problem
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Leaking on the exhaust manifold.
Oil leaks.