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　　如果你的奔驰去做保养，无论是4蝉店还是熟悉的汽修店，以下这4个项目绝对不要做，不然花的都是冤枉钱！

　　If you go for maintenance on your Mercedes Benz, whether it's at a 4S dealership or a familiar auto repair shop, never do the following 4 items, otherwise it will be a waste of money!

　　1、发动机内部油泥清洗很多地方会让你保养的时候顺便清洗下发动机的机油油泥，使用的方法是换油之"前加一瓶清洗剂，然后让发动机运转时10-20分钟再放掉，之"后加入新的机油。                                                                                                                                                                                                                                          这里告诉大家，只要保养的时候用的是正品的全合成机油，无论你的车跑了10万还是20万公里，发动机内部都不会产生任何的油泥。并且如果加了这种清洗剂之"后，可以说是百害而无一利，这是因为发动机内部结构是非常复杂的，加进去之"后并不能彻彻底底的放出来，会有部分残留在发动机内部。

　　1. Cleaning the oil sludge inside the engine can help you clean the engine oil sludge during maintenance. The method is to add a bottle of cleaning agent before changing the oil, and then let the engine run for 10-20 minutes before draining, and then add new oil. Here's to tell everyone that as long as you use genuine fully synthetic engine oil during maintenance, no matter whether your car has been driven 100000 or 200000 kilometers, there won't be any sludge generated inside the engine. And if this cleaning agent is added, it can be said to be harmful without any benefit, because the internal structure of the engine is very complex, and after adding it, it cannot be completely released, and there will be some residue inside the engine.

　　2、干冰清洗积碳

　　2. Clean carbon deposits with dry ice

　　相信你或多或少都经历过被推销清洗积碳的服务，更有的店会宣称：“如果你的车积碳太多的话，就需要拆开发动机了，得不偿失”。所以真的有必要去清洗积碳吗？这是要分情况的，现在的车都是搭配缸内直喷发动机，10万公里以内都不需要清洁积碳和节气门，平时定期保养的时候更换质量可靠的空气滤芯，如果经常在市区拥堵路段行驶，定期使用燃油宝防止喷油嘴堵塞就可以了。而自然吸气的发动机，还是建议每6万公里去检查下是否有积碳。（小贴士：自然吸气的发动机，每4万公里发动机因为积碳过多，会抖。）

　　I believe you have more or less experienced being promoted to clean carbon deposits, and some stores may claim, 'If your car has too much carbon deposits, you will need to disassemble the engine, which is not worth the loss.'. So is it really necessary to clean carbon deposits? This depends on the situation. Nowadays, cars are equipped with direct injection engines, and there is no need to clean carbon deposits and throttle valves within 100000 kilometers. During regular maintenance, reliable air filters should be replaced. If you often drive in congested urban areas, you can use the fuel bank regularly to prevent fuel injector blockage. For naturally aspirated engines, it is recommended to check for carbon deposits every 60000 kilometers. (Tip: Naturally aspirated engines may shake every 40000 kilometers due to excessive carbon buildup.)

　　3、刹车深度保养当你开了几万公里去保养的时候，有的地方会让你做大几百的刹车深度养护服务，这又是一个花冤枉钱的项目。其实，正常到了需要更换刹车片的时候，叫师傅在刹车片的一些地方涂点油就可以了，也不会额外收你费用。

　　3. When you drive tens of thousands of kilometers for brake depth maintenance, some places may require you to provide several hundred brake depth maintenance services, which is another project that wastes money. Actually, when it's time to replace the brake pads, just ask the technician to apply some oil to some areas of the brake pads, and they won't charge you extra.

　　4、无水冷却液

　　4. Anhydrous coolant

　　有的地方会推荐你使用无水冷却液，它的最大特点除了贵还是贵，你说它散热效果好吧，它是油，难道散热效果比水还好吗？说它终身免维护，它也会损耗的。如果你换了这种冷却液，会在冷却液盖上贴上“禁止加水”的标，万一车辆哪天在路上跑着的时候漏水了，去哪找这种冷却液？

　　Some places will recommend you to use anhydrous coolant. Its biggest feature is that it is expensive. You said it has good heat dissipation effect. It is oil. Is its heat dissipation effect better than water? It is said to be maintenance free for life, but it will also wear out. If you change to this type of coolant, you will put a "Do not add water" label on the coolant cap. In case the vehicle leaks water while running on the road one day, where can you find this type of coolant?

　　所以冷却液就踏踏实实更换原厂的吧，本身奔驰的冷却液就是10年或者20万公里才更换，平时保养的时候添加一些就好了。

　　So let's replace the coolant with the original one steadily. Mercedes Benz's coolant is only replaced after 10 years or 200000 kilometers. Just add some during regular maintenance.

　　本文由 济南奔驰汽车保养  友情奉献.更多有关的知识请点击  /   真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from Jinan Mercedes Benz Automotive Maintenance For more related knowledge, please click / Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.