It depends on what the job is, small airway service trucks for light aircraft hold around 450 - 700 gallons and those road monsters can move 9500 Gallons in a single 4 compartment aluminum tanker -...
Ammonia in a gaseous state would be measured in cubic feet. Ammonia tanker trailers would be sized based upon how many gallons of liquid ammonia they could legally carry in the state/states in which...
It all depends on the Truck. Anywhere from 30 gals to 150+ gals on the larger ones for gasoline. The larger Semi delivery trucks can have 400+ gal of diesel. Times that by the $ per gal of diesel...