A head gasket leak is a serious engine issue, one that needs a major and expensive fix. However, you might have heard of gasket sealant, a liquid that promises to seal gasket leaks. Is it a miracle ...

Gaskets. At a glance they seem unimportant, yet without them, fluids would leak from every joint, fuel would spew, and flaming gases would explode from every crevice once the spark plug flashed.

Head gasket repairs can be very costly, so sealant is worth trying. Your car’s head gasket probably never comes to mind until something goes wrong. Since this is the piece that is between your ...