Strabo wrote:
If on propane they are no problem slightly off level. We dry camp in the desert all the time, never truely level, but within reason.
propane is not more tolerate then electric.......cooling unit does NOT recognize source of heat.
Gravity flow is critical to proper function.
Overheating is a result of gravity flow being disrupted.
That is why 'reasonably' level is level enough as long as the gravity flow is not impacted.
Nothing to do with whether propane or electric is used.
If it did matter then logic would dictate electric cause it is typically 18*F lower than propane
