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My 1992 Corolla is leaking oil when driving then pools while parked. Already checked the oil pan and no leak. Where else could it be coming from?

  • Perhaps the oil pump? Can you tell from where abouts in the engine it is dripping from (eg: front left side) – MeltingDog Jan 24 '13 at 22:31
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One popular possibility is oil leaking past the rear main seal when running, accumulating in the transmission's bellhousing, and then draining from there when parked. Happens a lot when rear mains start to leak.

Oil around the rear of the oil pan, on the bottom of the transmission are all good signs of this.

Rear main leak

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Front main seal is a likely culprit also, where the majority of it is pooling when you park can tell a lot.

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