Will Transmission Fluid Expire If Not Changed for 5 Years?
2 Answers
Yes, it will expire. If transmission fluid is not replaced within the recommended interval, its quality and performance will deteriorate, leading to increased impurities. This can accelerate wear on transmission components, resulting in premature failures or higher failure rates. Here are relevant details: 1. The primary functions of transmission fluid are to maintain the cleanliness of the gear-shifting system and to lubricate the transmission components, thereby extending their lifespan. Generally, vehicle manufacturers recommend replacing transmission fluid every 2 years or 50,000 kilometers, whichever comes first. For example, if a vehicle has been in use for 2 years but has only traveled 20,000 kilometers, or if it has been used for less than 1 year but has already reached 50,000 kilometers, the transmission fluid should be replaced in both scenarios. 2. For new vehicles, it is advisable to replace the transmission fluid every 50,000 kilometers initially. After that, the replacement interval can be adjusted based on driving conditions. If the vehicle is driven under good road conditions, the fluid can be replaced every 70,000 kilometers. However, if the road conditions are poor, it is recommended to replace the fluid every 30,000 to 40,000 kilometers. This practice helps prolong the transmission's lifespan and reduces the likelihood of failures.
As a veteran driver with over 20 years of experience, I must say that transmission fluid does deteriorate if not changed for five years, just like expired food. Over time, metal particles and moisture accumulate in the fluid, reducing its lubrication effectiveness, which leads to rough gear shifting and increased noise. I encountered this issue last year—my car didn't run smoothly, and repairing the transmission cost me over 5,000 yuan. I recommend checking the fluid quality immediately. If it appears cloudy or has an odd smell, replace it right away. Generally, manufacturers suggest changing it every three to five years—check your car's manual for specifics, especially since automatic transmissions are more sensitive. Don't underestimate this—replacing the fluid only costs a few hundred yuan, but repairing a damaged transmission can be extremely expensive, not to mention the inconvenience and frustration. Pay attention to your car's condition and maintain it regularly to ensure long-term performance.
