Should the Filter Be Replaced When Changing the Transmission?
3 Answers
When replacing the transmission fluid, it is necessary to replace the transmission fluid filter as well. Here is an introduction to the transmission: 1. Transmission fluid serves the functions of lubrication and heat dissipation within the transmission. For automatic transmissions, the fluid also transmits power. Without transmission fluid, the transmission cannot function properly. 2. The transmission is a crucial component in a vehicle. It adjusts speed and torque, enabling the engine's power output to meet the demands of various driving conditions. 3. Common types of automatic transmissions include dual-clutch transmissions (DCT), automatic transmissions (AT), and continuously variable transmissions (CVT). 4. AT transmissions are the most widely used, technologically mature, and have the highest production and R&D costs. These transmissions offer smooth shifting and excellent durability. 5. CVT transmissions have a simple structure, compact size, and light weight. Their production costs are relatively low, making them a popular choice for many affordable family cars. 6. Dual-clutch transmissions (DCT) are currently very popular. They feature fast shifting speeds and high transmission efficiency. Structurally similar to manual transmissions, DCTs have two sets of clutches—one for odd-numbered gears and the other for even-numbered gears.
I've been in the auto repair business for many years and have seen many cases where people forget to replace the filter when changing the transmission, leading to major issues. The filter is a critical component of the transmission, specifically designed to filter out metal shavings and debris from the oil, protecting the internal gears and bearings. If the old filter isn't replaced, those contaminants will pollute the newly added transmission fluid, causing the newly replaced transmission to wear out or malfunction quickly. A transmission replacement is costly and time-consuming, but taking this opportunity to install a new filter only costs a few hundred extra dollars and can extend its lifespan by several years. I recommend replacing it every time to avoid the cost and hassle of returning for repairs, making maintenance much easier.
I've been driving for twenty years and have replaced the transmission twice, each time proactively requesting a filter change. If the filter gets clogged, the oil pressure becomes unstable, causing the transmission to operate roughly and overheat easily, leading to potential burnout. A friend of mine skipped this step last time, and within three months, his new transmission started making strange noises, costing over a thousand dollars to repair—he deeply regretted it. Replacing a transmission is already a major undertaking, while changing the filter is simple and inexpensive, just like an oil change. A small additional investment can prevent future issues, making driving much safer. Never skip this step—I always emphasize this detail in maintenance records.
