Liquid Glass

Has anyone ever heard of using liquid glass in a car that could have a cracked head or blown head gasket? If so, exactly where do you put it and how much do you use?

I need to buy some time to save up for another car. I've heard that my car would run for quite a while after doing this. Any info would be greatly appreciated!

I have used it before. It goes in the radiator. It usually comes in a quart jar that you add the whole thing. Let run for 5 min then drain all fluid. Refill with fresh coolant and hope for the best. The down side is that the heads will be nonrebuilable after you use it. It does work but it is not a long term fix.