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經過長途行駛，汽車發動機內部可能沉積了一層會造成發動機耗油增加、功率降低甚至損傷的油泥，同時機油、防凍液、制動液可能損耗也比較大。
After long-distance driving, a layer of sludge may be deposited inside the car engine, which will increase the fuel consumption, reduce the power and even damage the engine. At the same time, the oil, antifreeze and brake fluid may also be consumed.
所以，我們要先檢查發動機艙內的機油、制動液和防凍液，看油液是否充足、變質；如制動液變質，導致制動力不足，就應當及時更換。而如果防凍液也需要更換，需注意顏色不同的防凍液好不要混用，因為不同的防凍液因為成分不同，混用后往往影響實際效果。接著再檢查動力總成、傳動系統有無滲漏機油。
Therefore, we should first check the engine oil, brake fluid and antifreeze in the engine compartment to see whether the oil is sufficient and deteriorated; If the brake fluid deteriorates, resulting in insufficient braking force, it should be replaced in time. If the antifreeze also needs to be replaced, it should be noted that antifreeze with different colors should not be mixed, because different antifreeze often affects the actual effect after mixing because of different ingredients. Then check the powertrain and transmission system for oil leakage.
中途加油時，由于各地加油站的油品質量不一，有些汽油膠質含量過多、標號不夠，會造成汽車發動機加速不良、油耗上升、尾氣不合格等問題，使三元催化器失效。對此，我們可以對油路、油箱和噴油器進行清洗。
During midway refueling, due to the different quality of oil products in gas stations around the country, some gasoline has too much colloid and insufficient grade, which will cause problems such as poor acceleration of automobile engine, rising fuel consumption, unqualified exhaust and so on, and make the three-way catalyst ineffective. For this, we can clean the oil circuit, oil tank and fuel injector.
清洗車內
Clean the inside of the car
暢游回來后，我們的車內可能會有異味。這主要是兩方面原因造成的。一是長時間行駛在路上，空氣中的粉塵雜質多，容易堵住空調濾芯，這不僅會縮短空調使用壽命，而且容易滋生細菌，引發車內異味生成霉斑。二是我們難免在車上放物品或吃食物，食物殘渣與物品往往會釋放異味。
After Changyou comes back, there may be a peculiar smell in our car. This is mainly caused by two reasons. First, when driving on the road for a long time, there are many dust impurities in the air, which is easy to block the filter element of the air conditioner, which will not only shorten the service life of the air conditioner, but also easily breed bacteria, causing the odor in the car to produce mildew. Second, it is unavoidable for us to put items or eat food in the car, and food residues and items often release peculiar smell.
長時間處在這種異味環境中，人會感到頭暈、惡心甚至患上呼吸道疾病。因此，要對車內做一次較為徹底的清洗。清理部位包括座椅、儀表盤、腳踏墊、座椅縫隙、車門內側、坐墊、空調出風口、儲物格、后備廂。而空調濾芯，除了清理干凈再裝回原位，還可直接換新。
People will feel dizzy, nauseated and even suffer from upper respiratory tract diseases after being exposed to this peculiar smell for a long time. Therefore, the interior of the car should be cleaned thoroughly. The cleaning parts include seats, instrument panels, footrests, seat gaps, inner side of doors, cushions, air conditioning vents, storage compartments, and trunk. The filter element of the air conditioner can be directly renewed in addition to being cleaned and then reinstalled.
濟南寶馬汽車專修人員認為清洗完，車內空氣的異味會有效減淡，但我們也要注意多開車窗，通風透氣，并保持車內干燥、整潔，從源頭減少異味的產生。除此，還可購買一些車內除味產品，清新車內空氣。
Jinan BMW special repair personnel believe that after cleaning, the odor of the air in the car will be effectively reduced, but we should also pay attention to opening more windows, ventilation, and keeping the car dry and tidy, so as to reduce the generation of odor from the source. In addition, you can also buy some in car deodorization products to freshen the air in the car.
After a comprehensive inspection and cleaning, I believe our car can be renewed and continue to be used in a better state. Of course, if you have questions about the maintenance of the car, you can follow our website http://m.nanofluidizer.com consulting service
