i replaced the thermostat and gasket in my 95 f150. after i put it back together and started it it was leaking anitfreeze from the bottom of it everything seems tight but not sure whats wrong. i thought i mught need some sealant or something but not sure what to do need reply asap as i need the truck later today help...

 

I take you have fixed this problem now, but it check your hoses. If the hoses were old when you moved everything around you probably tore a whole in one of the hoses. Also could be a cracked housing, can't tighten it too much.