Guest tom pre Posted August 3, 2010 Share Posted August 3, 2010 1924 6 45 buick.heat valve stuck inmain exhaust heat valve' a'. soaked for 3 weeks, used heat, no luck. any ideas ? thank you Link to comment Share on other sites More sharing options...
Larry Schramm Posted August 3, 2010 Share Posted August 3, 2010 GM Heat Valve Lubricant works best. It was designed for this application. You can get it from your local GM dealer or maybe here. By the way this stuff has been made since 1954.Heat Valve Lubricant Link to comment Share on other sites More sharing options...
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