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Old 10-10-2012, 03:37 AM
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Originally Posted by adantessr View Post
Not thinking that modern heater cores are made from aluminum instead of brass, I cleaned the core on my 98 C-1500 today with muriatic acid . . No wonder there was so much smoke and heat coming out of the hoses. It appears I melted down the core. . Tomorrow I replace the heater core.

Changing heater cores is a job that makes me cringe everytime. Can'ts stands it.
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