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Is Engine Cleaner Necessary?

4 Answers
Karl
09/02/25 6:06am
Engine cleaner is indeed necessary. Below is relevant information about engine cleaners: 1. Useful but with relatively limited effects: Engine cleaners can remove residual sludge from the engine oil passages and, to some extent, clean carbon deposits from the piston rings and ring grooves, providing actual maintenance benefits for the engine. However, due to the short duration they remain in the engine lubrication system and the limitations of this no-disassembly cleaning method, the effectiveness of engine cleaners is relatively limited. 2. Functions of engine cleaners: Engine cleaners contain special cleaning agents that effectively dissolve and remove sludge, varnish, and carbon deposits from the engine's internal oil circulation system, which are then expelled with the old oil. This improves lubrication efficiency, inhibits the formation of acidic substances inside the engine, protects the engine from corrosion, restores engine power, reduces fuel consumption and engine wear, extends the engine's service life, and ensures smooth and quiet operation of the engine lubrication system.
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VonEverett
09/14/25 8:09am
As a seasoned driver with over a decade of experience, I believe engine cleaners aren't daily essentials but can be necessary under certain circumstances. For instance, if your car has clocked tens of thousands of kilometers, especially with frequent stop-and-go city driving, carbon buildup inside the engine is inevitable. Those black sludge deposits can lead to sluggish acceleration or increased fuel consumption. In such cases, using a cleaner helps dissolve deposits and restore engine efficiency. After using it on my own SUV, I noticed smoother idling and slight fuel savings. However, new or low-mileage vehicles rarely need it—just follow the maintenance manual's recommendations if required. The key is choosing reputable products; avoid cheap knockoffs that might damage components. Developing good habits like regular oil and filter changes proves more effective than occasional cleaner use. If you notice unusual symptoms, prompt inspection is always wiser than relying on cleaners.
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McElias
10/29/25 2:04am
I'm a new driver who just got my license and have only owned a car for a year, so I'm quite curious about this issue. The mechanic told me that engine cleaners aren't absolutely necessary, especially for new cars—if everything runs fine normally, there's no need to bother. But if you notice slower acceleration or the engine light comes on, you could try adding a bottle to see if it helps. Last time, I spent some money on fuel additives, and the car ran a bit smoother, though the difference wasn't huge. It's best to follow the vehicle's manual and avoid experimenting randomly, as some cleaners might be unsuitable and just waste money. Driving habits matter too—regularly driving on highways at higher RPMs can help flush out internal carbon deposits. Overall, sticking to simple maintenance is key, and engine cleaners are just an optional little helper.
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Diaz
12/12/25 2:16am
Hey, as a car enthusiast who loves tinkering, I have to say engine cleaners are quite interesting. They use chemical methods to remove carbon deposits and sludge, making the engine run smoother. I personally add some every 5,000 kilometers, and it reduces idle vibrations while improving power output slightly. But it's not a miracle cure - old component issues still require major repairs. Pay attention to dosage when using it, as excessive amounts may damage oil seals, so strictly follow the instructions. Tools like OBD scanners can help monitor parameter changes and assist in evaluating cleaning effectiveness. Don't expect it to solve major malfunctions alone - regular maintenance is key. Simply put, it's fun but not essential, just use it carefully.
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