Is it okay not to change transmission fluid for five years?

[VanBrody]

It is not advisable to leave transmission fluid unchanged for five years. Transmission fluid that hasn't been changed for 5 years will expire. If transmission fluid is not replaced within the recommended interval, its quality and performance will degrade, accumulating more impurities. This leads to accelerated wear of transmission components, resulting in premature failures or higher failure rates. Transmission fluid replacement interval: Among vehicle maintenance items, transmission fluid replacement is crucial. Generally, transmission fluid should be replaced every two years or approximately every 40,000-60,000 kilometers driven. However, there's a filter inside the transmission oil pan, and often when changing transmission fluid, the filter element isn't replaced. Function of transmission fluid: During vehicle operation, friction occurs between mechanical metal components inside the transmission, generating impurities and metal debris. The transmission fluid filter's role is to remove iron particles, sediment, and other contaminants from the fluid, supplying clean oil to all components for lubrication and cleaning purposes.