Do I need to close the fuel tank cap myself after refueling?

[OSilas]

After refueling, you need to close the fuel tank cap yourself. Most gas stations now are self-service, requiring you to open and close the fuel tank cap. Here is some relevant information about the fuel tank: 1. Introduction: A container for fuel, it is a specialized container in hydraulic systems used to store hydraulic oil or fluid. Fuel tanks can be divided into two types: open tanks and closed tanks. Open tanks have their liquid surface in contact with the atmosphere, and an air filter is installed on the tank cap. 2. Function: In addition to storing oil, the fuel tank in a hydraulic system also serves to dissipate heat, separate air bubbles from the oil, and settle impurities. Many auxiliary components are installed in the fuel tank, such as coolers, heaters, air filters, and liquid level gauges.