Abstract: Multi-compartment tankers, especially road tankers, suffer from cracking of the compartment divisions due to the repeated stressing of the tank in use. The present invention provides a solution by providing the desired capacity in a plurality of tanks which are individually mounted one behind the other to a vehicle chassis using a flexible mounting system which allows the individual tanks to move with respect to one another in response to flexing of the vehicle chassis. The mounting allows at least upward and downward movement relative to a rest position. The use of multiple tanks facilitates the use of a sight gauge for determining the quantity of liquid in each tank.