What are the reasons for regularly changing transmission fluid?
2 Answers
Regularly changing transmission fluid is necessary for the following reasons: 1. To ensure smooth and seamless gear shifting and improve driving performance; 2. To enhance oxidation resistance and reduce component corrosion; 3. To provide excellent protection for gear sets; 4. To offer superior anti-wear effects and prolong the lifespan of the automatic transmission. Methods for maintaining the transmission include: 1. Regularly replacing transmission fluid; 2. Frequently checking fluid levels; 3. Avoiding coasting in neutral; 4. Periodically cleaning the transmission; 5. Avoiding forced gear disengagement; 6. Reducing idle warm-up time. The function of the transmission is to alter the gear ratio, expand the range of torque and speed variation for the driving wheels, adapt to frequently changing driving conditions, and allow the engine to operate under favorable conditions.
I often drive long distances, and when I feel the gear shifting is not smooth on the highway, I check and find that the transmission fluid is old, so it needs to be changed regularly. The main issue is that the fluid degrades over time and loses its lubricating properties, increasing friction between gears, which generates heat and damages components. Old fluid also accumulates metal debris, clogging small passages and leading to sluggish gear shifts or even malfunctions. I make it a habit to change the fluid every 30,000 miles. Although the cost is minimal, it saves me thousands of dollars by avoiding major transmission overhauls. Over the long term, the car's power delivery becomes smoother, gear shifts are much crisper, and it feels as reliable as a new car. Especially during hot seasons, fresh fluid helps with heat dissipation, preventing overheating and breakdowns, giving me peace of mind on long trips. After making it a routine, my fuel consumption hasn’t increased, and overall maintenance has become much more cost-effective.
