What is the Purpose of Engine Deep Cleaning?

2 Answers
LaArya
07/25/25 4:33am
Engine deep cleaning can remove carbon deposits from the car. If the carbon buildup is not particularly severe under normal circumstances, there is no need for engine deep cleaning. However, when the engine carbon deposits become very serious, leading to symptoms such as idle shaking, increased fuel consumption, and reduced power, it is advisable to consider performing an engine deep cleaning. Under normal conditions, a car generally requires cleaning once every 30,000 to 50,000 kilometers, and it does not need to be cleaned too frequently. Reasons why engine deep cleaning should not be performed too frequently: Most of the lubricants used in modern passenger cars come with self-cleaning functions, ensuring that the engine does not produce sludge or produces very little within a certain mileage. Cleaning agents are corrosive and can corrode non-metal components inside the engine, leading to engine malfunctions. Internal wear occurs over time, and the sludge inside can play a certain role in compensating for and repairing this wear. Precautions for cleaning carbon deposits in cars: The concentration of the cleaning agent must be adjusted according to the degree of oil contamination, as different levels require different concentrations. Additionally, after cleaning, it is essential to promptly remove any residue to prevent residual liquid from corroding the engine. When using cleaning agents, carefully read the instruction manual and follow the guidance of professionals. Cleaning methods can include ultrasonic cleaning, spraying, hot soaking, and manual wiping.
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VonDante
08/10/25 5:25pm
As a veteran mechanic with 20 years of experience, engine deep cleaning is essentially giving your engine a thorough spring cleaning. Long-term driving leads to sludge and carbon buildup, which cakes onto critical components like pistons and throttle bodies, making the car guzzle fuel while running sluggishly, like an old ox panting. Complete disassembly for deep cleaning directly removes these stubborn deposits – especially effective for vehicles with severe carbon buildup. You'll immediately notice lighter throttle response and eliminated cold-start hesitation afterward. For older cars, one treatment lasts at least 20,000km, with particularly noticeable improvements in winter.
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