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Where is the drain screw of the Passat Lingyu differential located?

1 Answers

StEllie

07/30/25 3:57am

The drain screw of the Passat Lingyu differential is located at the bottom of the differential housing. Operation method for draining the differential oil: Below the transmission, locate the drain port of the Passat differential, then unscrew the screw to drain the oil. Function of differential oil: The differential oil primarily serves to lubricate the differential. If differential oil is not added, it will accelerate component wear, lead to part damage, and cause abnormal noises, affecting safe driving. The method for replacing Passat differential oil is as follows: First, lift the vehicle and place a large container underneath to catch the waste oil. Use an appropriate screwdriver to remove the inner and outer covers of the transmission. When most of the oil has drained, remove the last oil pan, take off the oil pan gasket, and clean the surrounding dirt. If the gaps are not thoroughly cleaned, use tools and cotton cloth to wipe all cleaned transmission oil filters clean, then reinstall them one by one. Wipe the surfaces of the replaced components clean, ensuring there are no water or oil stains, as these can cause oil leaks. Reinstall the cleaned oil pan and gasket together, then add the original manufacturer's oil. Check the oil level through the filling observation hole. If the oil is full, it will flow out from the observation hole.

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