Is the part that is leaking aluminum or copper? If copper, use lead based solder to fill the leak, if aluminum there is a solder for that as well. However it requires an air/acetlyene torch to heat it up. Probably you would have to remove it in either case.

MIG is too hot and epoxy won't hold.

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I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k