Increased Oil Consumption Due to Intake Manifold Gasket Leak on Jeep Grand Cherokee

On 3.9L V6 and 5.9L V8 engines, the intake manifold gasket may leak and cause increased oil consumption and a spark knock during acceleration; the gasket should be replaced.

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Average mileage: 249,000 (209,000–289,000)
Engines affected: 4.0L 6 Cylinder, 5.2L V8
6 model years affected: 1993, 1994, 1995, 1996, more1997, 1998
10 people reported this problem
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1994 Jeep Grand Cherokee - 4.0L 6 Cylinder 289,000 mi,
We are using about 1 qt of oil driving the car 200 miles.