Hmm. OK, didn't realize the green was not good. Run it in my cummins no probs after 5 yrs.?
Not sure if this relates, but now I have no heat/circulation getting to the heater core lines. ?
Large diam hoses are HOT but smaller ones are not. Engine temps according to dash gauge reads normal temp's.
The circulation pump is running, I can hear it.
Does this sound like a thermostat issue? or water pump?
Or what?
Thanks.