Should the filter be replaced when changing the transmission oil for Audi A6L?
3 Answers
Audi A6L transmission oil change whether to replace the filter depends on how dirty the filter is. If the oil is black with residue, the filter should be replaced. If it's not dirty, cleaning it with kerosene allows for continued use. Transmission oil replacement cycle: Automatic transmission oil should be replaced every two years or after driving 50,000-80,000 kilometers, while manual transmission oil should be replaced every three years or 100,000 kilometers. Function of transmission oil: It is an oil product that keeps the gear system clean, lubricates to extend the life of transmission devices, provides effective lubrication even at low temperatures, and reduces oil loss under harsh operating conditions.
I run an auto repair shop and have seen many transmission issues with the Audi A6L. When changing the transmission fluid, you must replace the filter as well. The filter acts like a mask in the oil passage, blocking metal shavings and sludge. Changing only the fluid without the filter is like pouring new oil into a dirty cup—it will still ruin the transmission. Last time, a car owner tried to save money by skipping the filter replacement, and within 3,000 kilometers, the transmission started jerking during gear shifts. When we opened it up, the filter was clogged black as charcoal. Replacing the filter along with labor costs just an extra 300 to 500 yuan, but it can save you 20,000 to 30,000 yuan in major transmission repairs. My advice is to follow the maintenance manual strictly—replace both the fluid and filter as a set during every service. Don’t gamble with precision components.
My A6L has run 80,000 kilometers, and I just had the transmission fluid and filter replaced last month. The mechanic said the filter is like the engine's air filter - over time it gets clogged with metal shavings. If you keep the old filter, the new fluid gets contaminated again, drastically reducing lubrication effectiveness. I specifically checked the old filter that was removed, and it was completely caked with black sludge. I suggest not skimping on this - since the oil pan is already opened up, replacing the filter only adds about half an hour of labor. Audi transmissions are particularly delicate - my neighbor didn't replace the filter and ended up with transmission slippage, and the towing fee alone cost ten times more than a new filter.