KMB, do you live in an area with very high summer temps? I have an Onan 5500 watt in my 2000 Suncruiser, and being in the Phoenix metro area with zero chance of seeing freezing temperatures, I run straight 30wt oil in it. Several summers with it running during the drive in temps well over 100° and no hiccups. I can't imagine that your 7000 watt has to even break a sweat to power a 30 amp coach! If it was a 50 amp coach it would also have the 7000 watt option, and the same cover and ventilation, so I'd be concerned about the replacement generator having the same problem!
Is code 37 for overheating?
