I have a 1997 buick skylark with a 2.4 quad 4 cyl in the shop for the 3rd time in 12 months with a leaking heater core. I have replaced the core 2 times before and each time it has been pin holes in the core due to what i belive to be "electrolysis" I have tes...

FIX posted 7/14/2009

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