There really isn't a set capacity, as the sizes and configuration of these trucks may vary. You could be talking about a single axle straight truck, or a tractor-trailer, whether a regular five axle unit or a Michigan 'sled'. Heating oil weighs ~8.2 lbs. per gallon, and a single axle truck with a 33,000 GVW would probably be able to carry 7 - 8 tons of payload, while a five axle semi truck and tanker trailer grossing at 80,000 lbs. would have between a 20 - 24 ton payload.
A typical delivery truck can hold around 2,000 to 4,000 gallons of heating oil, depending on the size and capacity of the tank.
it can hold anywhere from 750-1000 gallons of water
200 - 240 gallons.
22 gallons.
15
25.9
6,500 to 7,000 gallons.
there are many sizes, generally 2000 to 5000 gallons
Typically about 8800 gallons (33,300 liters)
16.5 gallons
15.9 gallons
it can prolly hold around 50 gallons