How Many Liters of Oil Are Needed for a Transmission Fluid Change?
2 Answers
Approximately 4 liters of oil are needed for a transmission fluid change. Here is some additional information: 1. A flush machine oil change is performed while the vehicle is running. During the transmission fluid change, the flowing oil will carry out contaminants from inside the transmission. Typically, 12 liters of transmission fluid are required for this method. 2. Transmission oil is primarily composed of petroleum-based lubricating oil or synthetic lubricating oil, blended with extreme pressure anti-wear agents and oiliness agents. It is an important lubricant used in various gear transmission devices to prevent gear surface wear, scuffing, and seizing, thereby extending their service life and improving power transmission efficiency. 3. Transmission oil has excellent anti-wear and load-bearing properties, as well as suitable viscosity. It should also possess good thermal oxidation stability, anti-foaming properties, water separation performance, and rust prevention capabilities.
Last time I went to change the transmission fluid, the mechanic told me that manual transmissions generally require about 2 to 4 liters, while automatic transmissions need more, ranging between 4 to 10 liters. My Honda Civic took 5 liters, and my friend's Highlander, with its larger transmission, used a full 8 liters. The variation mainly depends on the transmission type, displacement, and specific design. Gravity fluid changes can save you 2 to 3 liters compared to using a flush machine, but the cleaning effect isn't as thorough. A reminder to everyone: when changing the fluid, it's best to refer to the maintenance manual or have the mechanic use a specialized tool to check the fluid level. Adding too little can lead to insufficient lubrication, while adding too much increases resistance and fuel consumption. Regular fluid changes are crucial for transmission longevity—don't cut corners.
