Does the gasket and block sealer they call Blue devil really work on vehicles
4 Answers
Sometimes it works sometimes it doesn’t. All depends on just how bad the leak is. Remember it is only temporary if it does work. I had a GM quad four engine that would eat coolant so I tried it, it worked for almost a year before it let go and had it fixed, turned out the head was cracked in two cylinders and wasn’t a headgasket.
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When applied precisely, it works pretty well, at least for a while, and the head has to come off to get it right. But as long as the head's off, why not replace the head gasket.
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Absolutely, it will work but you must follow the directions EXACTLY. Hope that helps! Jim