Regarding your last issue. Liquids don't burn. Gases released by liquids burn. The temperature at which a liquid gives off flammable gas is called its flashpoint. Strangely, this is not the point at which it flashes; that's the ignition temperature. The flashpoint of wood is about 575 degrees F, of diesel is about 150 degrees F, and of gasoline is about -40 degrees F or C; they happen to be the same at that point. That makes gasoline damned dangerous, because it gives off flammable gas just as well as propane
does at room temperature. It is also a dense gas that accumulates in low places, as does propane
. To reassure you, I have welded struts onto a tank full of diesel, and have scooped up, filtered, and reused 75 gallons of diesel spilled in my engine
room. If it had been gasoline, we would have had to evacuate and hope nothing sparked. Oh, and I have a very flattering document on my cabin
wall from the USCG after I dealt with the results of two commercial
fishermen adding gasoline without turning off their engine. One of them will never walk again. Diesel is pretty safe to work with; absent a heat source sparks are not going to cause a fire. Gasoline in a confined space (not outboards) is damned dangerous. Notice that under ABYC standards, you can have a bottom outlet on a diesel tank, but must draw gasoline from the top.