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it would cause improper oil pressure which could cause gaskets and seals to bust. If you are talking about half a quart too much, that's nothing to worry about. but anything over 1 qt. too much and I would drain it.

AnswerIt will probably cause one or both of the crankshaft seals to fail.

The haynes manual says that it could cause severe damage to the engine

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12y ago
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9y ago

You don't want the rotating assembly (crankshaft & connecting rods) to come into contact with the reserve oil in the oil pan. It will whip the oil into a froth greatly reducing the oil's ability to lubricate.

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Q: What would happen if engine is over filled with oil?
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