A fuel tank trailer as known as an oil tanker, gasoline tanker trailer, or petrol tanker. It is designed to carry liquefied goods, and liquid types that can be transported, such as petrol, gasoline, oil, water, etc. They can transport one or more liquids at the same time, depending on how many compartments the fuel tanker trailer has. The most commonly used fuel tanker trailer capacity is 45, 000 liters.