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'73 3.0cs 30 year restoration


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New Orleans, LA
Yes, the rubber breaks down or the thackery washers loosen (if using those). Or if not installed correctly will leak right away. I've used regular gaskets for 8 years with no issues, and no leaks.

So it is a soft mount, which followed the strong recommendation from Korman. Is the air leak something that happens over time as the rubber breaks down, or something people see immediately?