How many kilometers should a BMW clean carbon deposits?
2 Answers
BMW engine carbon deposits should be cleaned approximately every 30,000 kilometers. There are several methods to clean carbon deposits in cars: 1. Intravenous drip cleaning: Hang a bottle-shaped tool above the engine, pour the cleaning agent into the bottle, and then introduce it into the engine through a tube to clean the carbon deposits. If the engine carbon deposits are severe, this method may cause blockage or damage to the three-way catalytic system. 2. Machine cleaning: Inject the cleaning agent into a machine, then pressurize it into the combustion chamber to allow the cleaning agent to react with and dissolve the carbon deposits, and finally extract the waste liquid. This method is quite effective for severe carbon deposits and does not require disassembling the engine, but it is more expensive, and the engine oil needs to be replaced after cleaning. 3. Engine disassembly cleaning: This is probably the most effective method. The entire engine is disassembled, and cleaning agents, ultrasonic methods, etc., are used to completely and thoroughly remove carbon deposits from the components. However, engine disassembly cleaning requires a lot of time and effort and is the most expensive.
From my years of experience driving BMWs, I'd recommend getting carbon deposit cleaning every 30,000 to 50,000 kilometers. My old 5 Series always shows obvious throttle response lag in city traffic congestion - that's the telltale sign of carbon buildup. Last time I had it cleaned at 40,000 km using a no-disassembly method, which saved time and effort, and the engine immediately regained its smoothness. Regular carbon cleaning is crucial - not only does it improve acceleration but also helps save fuel. Neglecting it leads to greater engine wear and higher repair costs in the long run. The key is considering your driving habits - frequent short-distance drivers like me accumulate carbon faster and may need checks at 30,000 km, while highway drivers can extend to 50,000 km. Remember, consulting professional shops is always wise.
