How to switch the main and auxiliary fuel tanks: We can switch between the main and auxiliary fuel tanks through the main and auxiliary fuel tank switching buttons on the left control panel of the driver. The main and auxiliary fuel tank switching buttons generally consist of the "SUB refueling gun" mark. After pressing, the vehicle will switch to the auxiliary fuel tank, and the vehicle's fuel supply will be provided by the auxiliary fuel tank. In addition, the main and auxiliary fuel tank switching buttons of some trucks are marked "AUXILIARY FUEL TANK". After pressing this button, the fuel in the auxiliary tank will be used. For large trucks or hard-core off-road vehicles, the installation of main and auxiliary fuel tanks can greatly increase the fuel reserve and effectively increase the vehicle's cruising range.
How to use dual fuel tanks in trucks. Double fuel tank models are equipped with two fuel tanks, the main and auxiliary. The capacity of the main fuel tank is generally twice that of the auxiliary fuel tank. You can find the switch between the main and auxiliary fuel tanks on the control panel to the left of the main driver's seat. button. Some more advanced models can automatically switch between the main and auxiliary fuel tanks. When the main fuel tank fuel level sensor detects that the fuel level is low, it will automatically switch to the auxiliary fuel tank for fuel supply, without the need for manual operation by the driver.