How Often Should the Transmission Filter Be Replaced
2 Answers
The transmission filter should be replaced every 40,000 kilometers. The transmission filter is a component responsible for cleaning the fluid, separating, and storing contaminants. Below are the functions of the transmission filter and the replacement method: 1. Replacement method: Under normal circumstances, ordinary drivers do not have the equipment to replace the transmission filter and can only have it replaced at a professional repair shop. 2. Transmission fluid flows within the transmission, lubricating the components while also washing away impurities attached to the surfaces of the components. As the fluid passes through the filter, these impurities are filtered out, and the cleaned fluid re-enters the lubrication system for circulation. 3. It filters external impurities, such as dust from the air entering the transmission through the ventilation valve, and filters friction material fibers generated by the friction of clutch plates and steel plates. 4. It filters mixtures produced by high-temperature working conditions of plastic components like oil seals and sealing rings, as well as metal shavings generated by the friction of gears, steel belts, chains, and other metal parts.
As a veteran driver with over 20 years of experience, the replacement frequency of transmission filters really depends on driving habits and vehicle type. For automatic transmission filters, I generally replace them every 30,000 to 50,000 kilometers. However, if you frequently drive in congested urban areas where oil temperatures are high and friction is significant, the filter wears out faster—I recommend checking it at around 25,000 kilometers. Manual transmission filters are relatively more durable and can last up to about 50,000 kilometers. From my experience, forgetting to replace them on time can lead to unstable oil pressure, stiff gear shifts, and in severe cases, complete gear failure, resulting in costly repairs. A money-saving tip: always inspect the filter when changing transmission oil—replace it immediately if you notice excessive debris to avoid major repairs. Vehicles that drive less on highways accumulate dirt in the filter more slowly, while those frequently stuck in short-distance traffic wear out much faster. In short, the owner's manual is a treasure, but don't follow it rigidly—adjust based on your driving conditions, inspect regularly to prevent issues, and keep your car running smoothly, safely, and worry-free for years.
