I'm hearing the speculation but my A/C is working hot and cold great. Inside is dry as a bone.
Right but I'm not concerned about the heat or AC or the heater core.
I'm worried about the small passages in the engine, the radiator that might be affected.
I'm all for using K Seal in an emergency or as a last ditch send on an engine. I'm reluctant to use it to fixing a heater core...
That being said....your Jeep, your rules...and I can't make any legitimate arguments if it's working!
-Mac