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What is making oily water stains on back of my vehicle?
on 2002 Buick Rendezvous

I keep seeing round, oily water spots on the bumper and back of my vehicle. Can you tell me what is causing this?

Asked by for the 2002 Buick Rendezvous
You have a leak! Engine oil or transmission fluid most likely.
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You have a leak! Engine oil or transmission fluid most likely.