Does Engine Flushing Oil Harm the Engine?
2 Answers
Engine flushing oil can cause damage to the engine. The effects of long-term use of engine flushing oil are as follows: 1. Damage: It can cause damage to the internal seals and cylinder block of the engine. 2. Composition: It affects the balance of the oil's components, leading to degraded oil performance. The functions of engine flushing oil are as follows: 1. Carbon deposits: It efficiently cleans internal engine carbon deposits, gum, and other harmful substances. 2. Substances: It neutralizes long-term harmful acidic substances generated inside the engine. 3. Cleaning: It cleans the crankcase PVC valve. 4. Mixing: It prevents the mixing of old and new oil and removes sludge and oil films formed by old oil to avoid reducing the performance of new oil. 5. Valves: It cleans the valve lifters and hydraulic lifters.
I've been driving for over 20 years and have used engine flush oil several times. Overall, I feel it causes no significant harm and actually brings benefits. The primary purpose of flush oil is to remove carbon deposits and sludge, essentially giving the engine a bath to make it run smoother, reduce wear, and extend its lifespan. However, the key is using it correctly: always choose reputable brand products—don't cheap out on low-quality ones, as they may pose corrosion risks; follow the instructions precisely, such as adding it before an oil change, running the engine for 15 minutes, then draining to ensure complete removal of the cleaning agent; and avoid overuse—recommended every 30,000 to 50,000 kilometers, as excessive flushing may wear cylinder walls and seals. From my own experience, using it periodically has reduced engine noise and slightly improved fuel efficiency. Just be cautious—don't blindly DIY, and you'll stay safe.
