1. First, you need to turn on the indoor authorized refueling function.

2. Fixed amount refueling (right click on the oil gun, the authorization window pops up)

Note: The entered amount must be able to add at least 1L of fuel to authorize fueling.

3. Fixed Quantity refueling (right click on the oil gun, the authorization window pops up)

Note: The number entered must be greater than or equal to 1L to authorize fueling.

4. Non-quantitative refueling (right-click the oil gun, the authorization window pops up)

5. Stop Refueling (right click the oil gun, the authorization window pops up)

Note: During the refueling process, this function can be used to stop refueling.