[pairodice]

So I had issues with the heater core at the front of the coach about a month ago.  I closed off the two valves that seemed to stop the flow of antifreeze to the front of the coach (the two valves closest to the front of the coach - BACK of the engine since it is mounted backwards as opposed to a truck…???).  
I drained, filled with water, drained, filled with water and ran the engine until the thermostat kicked in and drained the water then put in Final Charge RED Extended Life Antifreeze.  
I had an unexpected result today.  We traveled about 5 hours to Mississippi and settled into an RV park.  Went to take a shower and no hot water. Since I had turned off the heat loop to the front of the coach maybe this affected the engine heat to the Aquahot…??? 
So this started me thinking, which always gets me in trouble but NOT hot water this time, that I could just crank up the diesel or 240-volt electric AH and we could take nice hot showers as always. I went outside and everything looked fine BUT there was no juice in the AH tank that I could feel with my finger. The overflow jug was a little over the COLD mark.  
I didn’t want to start the AH with no juice but what was really ODD was that the juice in the overflow was now RED not the old green stuff that I had in it… I’m confused as to whether I should top off the tank with the old green or use the new hotness RED… what do you guys think and how on earth is this system connected to the engine now? Did I turn off the wrong valves??? 
The engine/radiator ran perfectly (after burping) and it even sucked antifreeze out of the overflow bottle which I’ve never noticed it doing before… 
BTW, the 12 to 24-volt conversion on the SCS air conditioners is working GREAT!  Ran for 3 hours on the genset in 80f and performed great front and rear! It’s almost cold in here now! Thanks to Gino/Jeff, Tom and others for their help! Now I have to get the heater system working with it and I’m golden (or time to sell!) …