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Re: Duramax oil leaks
Posted to Technical Discussion Forum on 10/17/2022 1 Reply

Hi David,

I learned long ago to verify any oil leak or seep with the appropriate oil dye and a black light. I have found most times it led to a sending unit, a feed pipe or a rear intake gasket problem.

Also, oil leaks on modern vehicles seldom have a comm... Login to read more.

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