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.
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 ...
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