Never had much luck with these, well, maybe once. Only have used Bars Leak, I think. I have a truck, engine is tucked back, one of the metal heater hose assemblies has sprung a leak. Only way to get to it is to pull off everthing on top of engine and passenger side. My other cars are not movable in the garage, so would have to do this in the street, Lol, too cold for that. I have seen some expensive brands, Moroso Ceramic, Blue Devil ($60) and a few others. Need something to maybe hold me by until I have a place to do this. Mechanics want several hundred because everything has to be moved. What have you tried that you can recommend? Thanks.

BTW... tried a $10 bottle of Bars Heater Core, did nothing.