Should the Filter Be Replaced When Changing Transmission Fluid?

1 Answers
MacElliot
07/29/25 8:53pm
When changing the transmission fluid, it is essential to replace the filter as well. This is because the filter continuously cleans the transmission fluid as the vehicle operates. Over time, metal shavings and sludge accumulate in the filter. If the filter is not replaced along with the transmission fluid, the cleaning effect will be compromised. Additionally, accumulated contaminants may break free from the filter, potentially clogging oil passages and affecting transmission performance. Here is more information about transmission fluid: 1. Transmission fluid serves multiple purposes, including cooling, lubrication, and power transmission. Many transmission shift control mechanisms rely on the fluid to function. Prolonged neglect of fluid changes can lead to failures in these control systems. 2. In torque converter transmissions, the torque converter—which connects to the engine—is filled with transmission fluid. In such transmissions, the fluid also plays a role in power transfer. 3. There are two methods for changing transmission fluid: the gravity drain method and the flush method using a specialized machine. The flush method is recommended despite its higher cost, as it removes more old fluid and ensures a cleaner, more thorough replacement. 4. When purchasing transmission fluid, opt for the OEM (Original Equipment Manufacturer) fluid. OEM fluids undergo rigorous testing by manufacturers to meet the transmission's requirements under various operating conditions.
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