Should the fuel tank be filled up completely?
2 Answers
You only need to fill the fuel until the pump nozzle automatically clicks off. Detailed instructions on refueling precautions are as follows: When selecting engine oil: Strictly follow the engine oil grade specified in the vehicle's user manual. If the same grade is not available, you may use a higher-grade oil, but never substitute with a lower-grade one. When adding engine oil: The amount of oil added should be slightly below the standard mark. Excessive oil increases the crankshaft's rotational resistance, reduces engine output power, and may cause oil to enter the combustion chamber, leading to oil burning, blue smoke emission, and increased fuel consumption.
Actually, after driving for so many years, I've realized it's completely unnecessary to fill up the gas tank every time. For daily city driving, adding about 200 yuan worth of fuel is enough to last two or three days. A full tank increases the car's weight, adding roughly 0.5 liters per 100 kilometers in fuel consumption, which translates to hundreds of yuan extra in fuel costs per year. You need to be especially careful in summer—gasoline expands when heated and can overflow from the vent, not only dirtying the car body but also posing safety risks. The charcoal canister near the fuel cap is particularly prone to issues; flooding it with gasoline reduces its ability to absorb fuel vapors, and in severe cases, it can trigger a fault warning light. I've seen several cases where overfilling damaged the charcoal canister, leading to repairs costing thousands of yuan. If the gas station recommends filling up for freebies, it's better to just pick useful small items instead.
