The mack Granite tanker truck is BRUDER's most recent addition to the mack fleet. It represents a particularly appealing combination of cab with chrome-look features and a fully functional tank. In addition to the opening doors, the cab features numerous options, such as the opening bonnet and the folding outside mirrors. New re-developed, fully functional tank body also brings about a host of new functions for our young tanker truck drivers. Fill water into the integrated tank. Build up pressure using the manually operated, compressed-air pump and operate the locking lever to drain the water through the hose using the draining unit.