I don't recommend fixing a leaky heater core. Replacing with a new one is your best bet. Heater cores sell for aprox $40 and labor depends on the vehicle.
Check out the water pump or heater core where does it leak? DB
Coolant leak, possible heater core. Suggest to have it pressure tested to find leak.
Stop leak will generally plug up holes u want plugged, but they will also plug up holes u don't want plugged. Better to fix the heater core.
The core will need to be replaced.Don't waste time trying to repair an old core.
what would it cost to fix a leak in a 7.3l fuel heater
The only fix for a leaking heater core is to replace it.
You can try Stop Leak, in an emergency. The only real repair is replacement.
caused by leaking heater core not radiator heater it is under the dash hard ot get to if the leak is not to big use radiator stop leak otherwise fix is going to be big bucks
The only fix for a leaking heater core is to replace it.
You will need to replasce the heater core.
replace your heater hoses going into and out of the heater core. One of them is probably split.
Not practical to try to fix a heater core. Replace it with a new one.