ISX coolant consumption problem

Just til the end of this month

 

Where are you located, or where is the truck? Seriously, I am not trying to ruin your day, just being honest with you, these emission trucks are nothing to mess with. And the dealers have us over a barrel unless you know and understand these systems. I have a list of guys that have been, or darn close to going bankrupt with these motors. Myself included, thank God for Apple and the stock we own. Seriously.

 

The wonder of modern technology.

 

Did you ever figure anything out with this? Have a 400ST as well. Shop has pressure tested system and has found leaks. Everything coolant system wise at this point has basically been replaced. Thinking at this point head gasket, or potentially dripping down into cylinders when engine is off? Puffs white smoke at start-up and clears itself out.