Intake Manifold Gasket May Leak Engine Oil on Buick Riviera
Problem overview
The intake manifold gasket may develop external engine oil leak. The manifold gasket will need to be replaced to correct this issue.
17 people reported this problem
4 commentsBuick Riviera vehicles with this problem
Average mileage: 157,000 miles
(121,000 - 183,000)
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