Multiple oil leaks on 3.1L engine on Chevrolet Lumina

On the 3.1L engines, oil leaks from the O-ring on the oil pump drive, the front crank seal, the oil pan gasket, and the oil sending unit are quite common.

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Average mileage: 173,000 (173,000–173,000)
Engine affected: 3.1L V6
1 model year affected: 1999
2 people reported this problem
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