RWM wrote:I use a propane tank. Clean inside, usually can find one cheap, zero loss to evaporation, no pump required...just keep air pressure on it (15-30 psi works best) and it flows as good as any pump.
I have 2 filters on mine and never had any issues whatsoever.
I think any transfer pump/tank made for fuel is fine. We've pumped 1000s of gallons through regular 12v transfer pumps.
I use a similar setup. Old 1,000 gallon anhydrous ammonia tank (same as a propane tank) on a running gear. For my diesel tanks I've used air pressure with good success. I haven't had the balls to try air to move gas yet...I have electric pumps on the gas tanks. Maybe it's an irrational fear.
I like the ammonia/propane tank because of the thickness of the steel. Also I keep it sealed up using the original ammonia gate valves on the tank which prevents evaporation. There are valves on both the pump and the vent that need to be opened before pumping gas. The original pressure relief valve is also on the tank which allows non-vented storage.