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Hair line crack


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Without knowing any details, I would give JB Weld a try. Over the years it's repaired a lot of things for me.

You must have the surface completely clean of any oil or dirt. Brake cleaner works well.

I had a case half leak and used some good RTV on the seam and it completely stopped the leak. That was three years ago.

So, RTV could be an option as well.


2008 STS V8
2016 Colorado Z71
1970 Corvette LT-1 Coupe

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I have been thinking about this. What complicates the issue is that you have OIL in the joint at the crack. Oil will cause a bonding problem for most repairs. You will need a substance that will resist oil and bond to the surface. I would think that getting the joint clean and dry would be most important. How long is the crack and how did it happen? If the crack it long, using a hardening type product may crack from the lack of rigidity of the joint. I don't know, is the pan steel? Maybe brazing it makes sense... Mike

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