The manufacture states that my 2018 Sonoma has two 20# LP tanks. Does that mean gallons? On the tanks themselves it says 8.5. I am unsure what these numbers mean. At any rate it wasn't enough for a 4 ...
20# is gas grill size my TT has 2 30# l.p. tanks and I use one at a time and it takes me quite a long time to empty. I don't camp much after November so not using furnace so it's mainly hot water heater and a little bit of stove and fridge while driving to campground.i know that some rv's use smaller tanks