How Many Kilometers Should a Gasoline Filter Be Replaced?
2 Answers
Gasoline filters should be replaced every 30,000 kilometers. If the fuel contains a high level of impurities, the replacement interval should be shortened accordingly. The specific replacement timing can be referred to the vehicle's manual. Gasoline filters are divided into two types: external and internal. Most vehicles use external filters, which are simple to replace—the connections between the gasoline filter and the fuel lines are secured with clips, allowing for easy removal and insertion. The primary function of the gasoline filter is to remove impurities from the fuel. It is located on the inlet side of the fuel pump, where the working pressure is relatively low, and typically features a nylon casing. For fuel-injected engines, the gasoline filter is located on the outlet side of the fuel pump, where the working pressure is higher, and usually comes with a metal casing.
I remember driving used cars for so many years, changing the fuel filter is quite particular. Generally, the manual recommends replacing it every 20,000 to 40,000 kilometers, but it really depends on the car model and driving habits. Like my old Volkswagen, I changed it at 30,000 kilometers because I drove mostly in the city, where fuel impurities accumulate faster. If you mostly drive on highways with cleaner air, you can stretch it to 40,000 kilometers. Last time I didn't replace it in time, the filter got clogged, and the engine ran unevenly like it was gasping for air, with fuel consumption skyrocketing. Delaying the repair cost me extra money at the shop. Now I make sure to check it regularly, referring to the owner's manual and the actual condition of the car, not waiting until the warning light comes on. I suggest beginners develop this habit too—it saves hassle and ensures safety. Spending a little on the filter the right way can keep the car running well for years.
