For the Audi S4 model, the amount of transmission oil to add is approximately 6-7 liters. Transmission oil is an essential lubricant that maintains the cleanliness of the gear system and effectively extends the lifespan of the transmission, providing excellent lubrication even in low-temperature conditions.
Transmission oils are primarily categorized into two types: Automatic Transmission Fluid (AFT), used for automatic transmissions, and manual transmission oil, also known as gear oil. The replacement cycle for transmission oil varies by model: generally, automatic transmission fluid should be replaced every two years or every 50,000 to 80,000 kilometers, while manual transmission oil should be replaced every three years or every 100,000 kilometers.
There are two methods for changing transmission oil: The first method involves lifting the car, removing the bottom screw of the transmission oil tank, and allowing the old oil to drain out naturally. Once no oil flows out, new oil is added. This method is simple and economical but may not completely remove all the old oil.
The second method utilizes an oil changer, which can inject new oil into the transmission and pump out the old oil until the oil inside the transmission appears clear. Although this method is more thorough, it consumes more new oil, resulting in higher replacement costs.
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