It can be switched through the main and auxiliary fuel tank switching button in the control panel on the left side of the driver. SITRAK is a high-end truck brand jointly created by China National Heavy Duty Truck and German MAN. According to Dianping, if the oil in the auxiliary tank of Shandeka cannot be transferred, you can use the main and auxiliary tank switching button on the left control panel of the driver. Make the switch. The brand trademarks used in the SITRAK brand are SITRAK and the Ginkgo leaf-shaped triangle SITRAK trademark.