Leaky heater core fixed, Thanks Nate

Well that little can of Silver seal appears to have stopped the leak in heater core. Just as Nate suggested, I ran the truck for a good 30 minutes and the floor and windshield bone dry!

Thanks Nate for sharing your wisdom!!!

 

Silver Seal

You're welcome .

Often the simplest ways are also the best .

FWIW , the BIG THREE American car makers have been using this in the initial assembly for decades , it's that good .

 

gonna try it

Well I'm gonna give it a try. Just installed brand new alum radiator so kinda scary.

 

still misting

Well no leak in cab but mists on windshield. Think I will replace the core.

 

What radiator cap you got on it? If you have much pressure at all, these old systems will find the weakest point and leak. I've read they were designed to run no-pressure, and we used to run 'em with radiator caps half-on (loose but on) and they'd never barf, even overloaded with grain on the trip to town.

I'm hearing a 4# cap is about as high a pressure as you wanna put on them.

 

Thanks I am not sure there is no markings. I am going to order one to be sure. Denis

 

I replaced the radiator cap with a 4# cap and no issues!