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Oil filler leak, C 90

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Steve2618G

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I changed the O- ring on the dipstick because it was wear imprinted; and thinking that’s where an oil leak was coming from. However, after a short taxi and parking overnight there was a tuna size can oil leak on the floor. We blew air back through the blow-by tube. There was oil coming out of the seam just below the cap.

Does anyone have experience with this? If so do you have a solution?
 

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