How Much Transmission Fluid Should Be Added at One Time?

[JaceAnn]

Automatic transmissions generally have two methods for fluid replacement: gravity drain and machine flush. Gravity drain requires 3~4L of fluid, while a machine flush requires 12L. The details are as follows: 1. Machine Flush: The transmission fluid is replaced while the vehicle is running, allowing the fluid to circulate and carry out contaminants from the transmission. This method typically requires 12 liters of transmission fluid and is more thorough and effective. 2. Function of Transmission Fluid: Transmission fluid is primarily composed of petroleum-based or synthetic lubricating oil, blended with extreme pressure anti-wear agents and lubricity enhancers. It is a crucial lubricant used in various gear transmission systems to prevent gear surface wear, scuffing, and seizure, thereby extending service life and improving power transmission efficiency.