Question about 1999 Pontiac Montana

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A lot of oil leaking

Can a lot of oil leak from oxygen sensor on 1999 pontiac montana

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You must be looking at a different sensor as the oxygen sensor is mounted in the exhaust system and wouldn't be exposed to the oil in the engine. The oil pressure sensor is likely what you see, it is not uncommon at all for these to fail internally and leak oil to the outside of the engine. Sometimes you need a special socket to change them. Both the sensor and the socket should be available at any auto parts store.

Posted on Apr 15, 2009

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Posted on Jan 02, 2017

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Or

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