I'm considering buying a 2001 Adventurer with a Ford V10 or similar Class A RV. Planning to use it for an extended trip around the US towing a Honda CRV. Would appreciate opinions/experiences of when this type of gas rig wouldn't perform well, particularly altitude and grade restrictions I might face. Under what "normal" conditions (ie. not mechanical failure) would the vehicle overheat, force my wife to seperately drive the tow vehicle, slow to crawl,etc. Given 20500 GVRW and minimal traveling water/2 passengers/etc., I'd guess I'll be driving with 18000 to 18500. I remember entering Yellowstone a few years ago in a Class C with a steep grade and wonder how this type of Class A would handle the climb.