how much in gallons does a tanker truck hold
Answer Wiki. A semi truck gasoline tanker holds 9,000 gallons, give or take. The capacity is usually controlled by the 80,000 lb gross weight limit for trucks in the US. (I can't speak for other parts of the world.) A gallon of gasoline weighs about 7 lbs, and the truck weighs quite a bit itself, so you don't see liquid hydrocarbon tanks exceed 10,000 gallons.
Quick Answer. Small tanker trucks have a maximum capacity of 3,000 gallons, while large tankers have a maximum capacity of 11,600 gallons. However, the maximum capacity of a tanker truck depends on the density of the liquid being transported, explains Bulk Cargo Systems. Tanker trucks are categorized by volume capacity and size.