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Will Not Changing Transmission Fluid Affect Power?

3 Answers
Anthony
07/29/25 2:20pm
Not changing transmission fluid will affect power. Long-term failure to change transmission fluid can lead to sludge buildup, causing poor flow in the valve body and oil pipes, which affects power transmission. Causes a drop in oil pressure: This results in the transmission oil becoming thicker. When oil pressure drops, internal heat dissipation is hindered, leading to excessively high oil temperatures, which shortens the lifespan of the transmission and drivetrain components. Causes slipping: Not replacing transmission fluid can result in weak acceleration when starting, leading to frequent slipping during vehicle operation. Causes rapid wear: Prolonged failure to change transmission fluid causes it to degrade and evaporate under high-speed and high-temperature conditions, leading to rapid wear of components and damage to internal transmission parts.
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DeAlivia
08/13/25 6:35am
Not changing transmission fluid will indeed affect performance, an issue I frequently encounter. Transmission fluid is like the blood of a car, responsible for lubricating gears, cooling components, and transmitting engine power. If you don't change the fluid for a long time, it will age, become dirty, and lose its lubricating effectiveness. Increased friction leads to sluggish and jerky gear shifts, especially noticeable when climbing hills or accelerating—you'll feel a clear lack of power. I've seen many cases during repairs where dirty fluid causes severe wear to gears or clutches, ultimately reducing transmission efficiency by over 10%, or even leading to complete failure. Regular fluid changes ensure smooth power transmission and prevent major overhauls. Generally, it's recommended to change the fluid every 50,000 kilometers, but always check your owner's manual—don't wait until problems arise to fix them.
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MacBethany
10/10/25 8:32am
Having driven for over a decade, I can confirm that not changing transmission fluid will definitely drag down performance. When the fluid is fresh, gear shifts are smooth, throttle response is quick, and power delivery is direct. But old fluid accumulates impurities, becoming thicker or deteriorating, with weakened buffering capacity. I remember my old car went months without a fluid change – during acceleration, it would groan and struggle to overtake, while fuel consumption increased. This happens because the fluid can't effectively reduce friction, compromising power transmission. Regular fluid changes not only restore performance but also save money by avoiding transmission repairs, which cost at least a few thousand. Develop the habit of checking; if you notice rough shifts or weakened power, promptly inspect fluid level and quality. Don't overlook small things – cars rely on daily maintenance.
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