Originally Posted by RvBill3
It can be run. It has a fuel pump so it can draw the fuel it needs even on a slope. It's fuel pickup in the tank is high enough that it will run out of gas while there is still about a quarter of a tank so you still have fuel to run the RV. That may be affected some by not being level -either causing it to run out of fuel sooner or later than normal.
I'd be worried about the crankcase oil and pickup a little .
I guess it depends on which way un level..
I'm assuming not severely UN level ??