Is the Internal Engine Cleaner Useful?

[McMariana]

Internal engine cleaner is useful. Here are the functions of the internal engine cleaner: 1. The internal engine cleaner can remove residual sludge in the oil passages and, to some extent, clean carbon deposits from the piston rings and ring grooves, providing practical maintenance for the engine. However, due to its short retention time in the engine lubrication system and the limitations of this no-disassembly cleaning method, the effectiveness of the internal engine cleaner is relatively limited. 2. The engine cleaner, also known as cleaning fluid, is commonly used for cleaning the lubrication system. It is an automotive product designed to remove harmful substances such as sludge, carbon deposits, and gum from inside the engine, helping to maintain internal cleanliness, improve oil flow, reduce wear, and extend the engine's lifespan.

[OHailey]

I believe engine flush additives can indeed be useful in certain situations. As a veteran driver with over a decade of experience, I've found they effectively remove carbon deposits and sludge from engines, especially for vehicles that have used low-quality oil for extended periods. These cleaners dissolve deposits when added before an oil change and run for a few minutes, improving lubrication, reducing abnormal noises, and even saving some fuel. However, effectiveness depends on the vehicle's condition - they show minimal benefits for new or well-maintained engines, while older vehicles benefit more. Strict adherence to product instructions is crucial, as improper use on severely clogged engines may block oil passages. I always pair them with quality oil changes for maximum benefits. Ultimately, they're supplementary tools that can't replace regular maintenance, but when used properly, they help extend engine lifespan.

[VanJudah]

From my perspective, the value of engine cleaners depends on how you use them. Based on my experience, they can be quite effective—especially when added at the end of an oil change cycle—as they help remove residual sludge and make the engine run smoother. However, there are risks: if there are large carbon deposits inside the engine, strong cleaners might dislodge them, potentially clogging filters or causing cylinder scoring. Therefore, I recommend using them only on newer engines or in cases of mild buildup, preferably under professional guidance. Additionally, product quality varies significantly, so opting for reputable brands is safer. For routine maintenance, regular oil changes and air filter replacements can also reduce reliance on cleaners. Overall, they're useful but not miraculous, and it's crucial to carefully assess your vehicle's condition before deciding.

[DeSerenity]

I think engine cleaners are useful but not essential. As a friend who frequently repairs cars, I've used them a few times with decent results—they can help with minor starting difficulties or unusual noises. For example, last time my car had unstable idling, adding the cleaner made it run smoother. But you have to consider the cost: a bottle costs dozens of yuan, and not all cars need frequent use. If you change the oil regularly and use high-quality oil, it's basically unnecessary. The key is the engine's condition: older engines with severe wear might benefit from occasional use to clean sludge, but new cars can skip it. When using it, remember to do so before the next scheduled oil change to avoid issues. Engine maintenance is more about prevention—avoiding low-quality fuel is more practical.

[SanEverly]

In my opinion, engine cleaners are useful but depend on the type. I've encountered different products like fuel system cleaners and fuel additives. The fuel system type can remove carbon deposits and improve combustion, especially effective for older cars; however, some strong formulas might damage seals in worn engines. I recommend choosing mild formulas and incorporating them into regular maintenance, not expecting a single dose to solve all problems. Compared to other methods, like using full synthetic oil which can also prevent sludge and reduce the need for cleaning. In terms of actual effects, it can slightly improve power response, but in the long run, good habits are still essential. Personally, I think cost-effective products are worth trying.