Hi I have a Pontiac G6 Coupe 3.5 L engine the serpentine belt broke and took the engine out I haven't done anything with this car for the last 3 months and I was wondering if I could put a sealer in it to seal it up I basically cooked the engine no serpentine belt no water pump what do you suggest I'm in Canada so it has 253,000 km on it
Are you talking about blown head gaskets? Any head gasket "sealer" is going to be a temporary bandaid at best, may not work at all, and may plug up your cooling system. With blown head gaskets it's also possible that antifreeze got into the oil which can cause internal engine damage.
However if you want to try it, sounds like you basically has nothing to lose. Scotty has recommended the Bar's Leaks product in the silver bottle.
