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What is the plastic cover on the engine?

4 Answers
SanJulian
07/28/25 9:57am
The plastic cover on the engine is the engine compartment cover. The engine compartment cover mainly contains a layer of sound insulation material, with its primary function being noise reduction, followed by heat insulation. It helps reduce the heat transferred from the engine operation to the hood surface. Vehicles equipped with hood sound insulation material generally do not produce white mist during rainy days. Regular oil changes: Engine oil serves as the lubricant for the engine, providing lubrication, cleaning, cooling, sealing, and wear reduction. It is often referred to as the 'lifeblood' of the engine. Prolonged failure to change the oil can lead to severe wear of engine components, reducing the engine's lifespan. Manufacturers recommend changing the oil every 5,000 to 10,000 kilometers. Regular replacement of the three filters: The three filters refer to the air filter, oil filter, and fuel filter. These filters help protect the engine by filtering out impurities and also improve the engine's efficiency. The replacement cycle for the three filters is typically the same as that for the engine oil during routine maintenance. Power steering fluid: Power steering fluid, commonly known as steering fluid, should be checked regularly for leaks or noticeable abnormal noises. Vehicles with electronic power steering are maintenance-free and do not require steering fluid replacement. The maintenance cycle for steering fluid is approximately 60,000 kilometers.
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DelSamuel
08/11/25 3:53pm
I've been driving for decades, and the plastic cover on the engine is usually called the engine cover or engine hood trim panel. I've found that this thing is mainly for noise reduction and aesthetics. When you start the engine, it absorbs some of the vibration noise, making the car feel quieter. Another function is to protect internal wiring and electronic components, such as preventing dust or oil from falling in and causing short circuits. Once, my car's plastic cover fell off, and the engine quickly accumulated dust, resulting in repair costs that were hundreds more expensive. So during routine maintenance, don't pull it too hard, as the clips can easily break—it's best to regularly check for cracks. If you need to clean the engine bay, remove the cover first for safety. Also, the cover design varies by car model; some high-end cars even have an insulating layer to prevent engine heat from dissipating, making the whole thing more durable.
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SanJulian
09/28/25 4:17am
As an average car owner, I've found that the plastic cover on top of the engine, called the engine decorative cover, is quite practical. Its main functions are heat insulation and beautifying the engine bay - it doesn't get hot to the touch and makes the engine compartment look tidier. For example, during hot weather, the cover blocks some heat, preventing high temperatures from damaging surrounding plastic pipes. If the cover gets damaged or goes missing, engine noise increases significantly, and more dust enters which can damage components. I've done DIY work myself - when cleaning, be careful with the clips when removing the cover, just give it a gentle pull. Mechanics have told me these covers aren't expensive, but it's best to replace with OEM parts if broken, as aftermarket parts tend to warp easily. During maintenance, don't forget to wipe oil stains off the cover's surface to prolong its lifespan. Overall it's quite important - while it doesn't affect driving safety, it contributes to comfort.
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PatrickAnn
11/11/25 6:13am
As a female car owner, I often pay attention to that plastic cover on the engine, which is actually the engine cover. Its function is quite simple: to protect internal components like electronic sensors from moisture erosion. I find it particularly useful during rainy days, as it reduces the chance of water vapor entering and causing malfunctions. If the cover becomes loose, there will be a buzzing sound while driving, so it's important to promptly check if the clips are secure. During my annual maintenance, I always ask the mechanic to inspect the condition of the cover, as even small cracks can lead to dust accumulation and increase the risk of repairs. I recommend that car owners occasionally check for cracks by touching it themselves. If it's damaged, replacing it isn't expensive. Keeping it clean also helps improve the engine's cooling efficiency.
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