[ThomasThomas]

I had to wear my jacket yesterday morning. How old is your truck. 2nd heater core?

[Dead Corpse]

99 Dakota. 140k miles. Core developed a leak back around 80k. It isn't leaking, I think I was just running too thick a mixture on the ethylene glycol and it congealed on me one of those really cold nights.

I should be able to dump in some flush, let it run a bit, and maybe hook a hose up to the outlet side of the heater core and try and push some of the ick back out.