Puked coolant while towing grade?

[gblauf]

So I was pulling my Rv up a decent grade this weekend to go camping in the mountains. I would guess 5-7% grade over 20 miles pulling 6k, Anyways I was in it pretty good holding 60-65 and watching EGTS and water temp when I smelled coolant, backed off a little the rest of the way, down to 45-50 and was fine. Popped the hood when we got there and looks like bout a gallon of coolant had come out the fill cap on the degas bottle. I was running a tow tune from diablosport at the time

Is this normal? Could it just have been overfull? I am a little worried!

Thanks

[mixedbreed]

I did that also but found my coolant level was too high to start with and my truck seems to burp until it is happy with the level. Is this the first time it happened? Have you changed coolant? Level?

[Term3]

Coolant cap is the next thing to check as they seem to have a limited life span.

[gblauf]

Yes, 1st time, changed 2 ELC bout a year ago, keep level at or below minimum line.
Maybe I should check the cap

[ssdeuce]

i fixed my puking for a while with a new cap, last summer i filled it to the low mark and drove 2hrs at 70-75 with 9k. the temp gauge started to go up and moved around a liitle on the hot side then settled back down, it had done the same thing burped out what it didn't want and was fine. mine only likes to have maybe 2in of coolant in it but might be time for another cap.