What is the cleaning method for sludge inside the engine?

[MarianaDella]

Engine internal sludge cleaning method is: 1. Use specialized sludge cleaning oil; 2. Drain all engine oil; 3. Add cleaning oil to the engine, let it idle for 15 minutes, then drain the cleaning oil. Engine maintenance methods include: 1. Use qualified engine oil; 2. Use qualified coolant; 3. Regularly clean radiator scale; 4. Regularly remove engine carbon deposits; 5. Replace air filter, oil filter, and fuel filter on time; 6. Check spark plug condition; 7. Maintain normal engine speed.

[LaNova]

I've encountered engine sludge buildup several times, and DIY cleaning requires caution. My go-to method is purchasing an engine flush additive, adding it to the old oil, then running the engine at operating temperature for about 10-15 minutes to ensure thorough circulation before draining. Always remember to check the oil pan for looseness before changing oil, otherwise the cleaning won't be effective. Avoid highway driving during the flush process to prevent engine component damage. Regular oil changes are crucial - I typically change mine every 5,000 kilometers to prevent sludge accumulation. Done properly, this can extend engine life, but improper handling may clog oil passages, so I always keep backup tools handy just in case.