charlie1 Posted December 23, 2010 Share Posted December 23, 2010 Has anyone ever heard of Blue Devil cooling system sealer? Costs about $60.00 a bottle at Advanced auto. A friend swears it sealed the intake manifold gasket on his 3800 Regal.It states it will work on the Northstar head Gasket issue as well?Generally I do not believe in this snake oil stuff BUT wanted to know if anyone used it or heard of it?Thanks Link to comment Share on other sites More sharing options...
NCReatta Posted December 23, 2010 Share Posted December 23, 2010 I used "Stop-leak" to fix my small head gasket leak. Dry as a bone. Link to comment Share on other sites More sharing options...
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