這個大家應該不陌生，但是你知道如何挑選合適的機油嗎？一般分汽油機油和柴油機油兩種，在汽車中起到潤滑，清洗，冷卻，密封和防銹蝕的作用。上一般是用API等級來區(qū)分機油。API發(fā)動機分兩種，‘S’開頭代表的是汽油機油，這個可以在機油桶上面找到（一般是從SA-SL）；‘C’開頭代表的是柴油機油，機油的級別高低是S后面每遞增一個字母，發(fā)動機的機油都會優(yōu)于前一種?，F(xiàn)在上大多數(shù)都是SF及以上的，（像嘉實多，殼牌，美孚等都是SN及以上的）。
This should be familiar to everyone, but do you know how to choose the right engine oil? It is generally divided into gasoline engine oil and diesel engine oil. It plays the role of lubrication, cleaning, cooling, sealing and rust prevention in automobiles. Internationally, API grade is generally used to distinguish engine oil. API engines are divided into two types. The beginning of's' represents gasoline engine oil, which can be found on the engine oil barrel (generally from sa-sl)‘ The beginning of C 'represents diesel engine oil. The level of engine oil is s. with each increasing letter after it, the engine oil will be better than the previous one. At present, most of them are SF or above in the world (such as Castrol, shell, Mobil, etc. are Sn or above).
ASE粘度等級，很多車友都問我，4s店推薦的10w-40和0w-40這兩種那種好。不懂得朋友可以淘寶一下機油，一般機油桶上面都會標注。‘W’表示winter（冬季），前面的數(shù)字越低說明在低溫的流動性越好，車子在冷啟動時對發(fā)動機保護越好(一般在南方比較多的選擇10W或者5w就可以，在北方多的選擇可以選擇好一點的機油)。
Many riders asked me about the ASE viscosity grade. The 10w-40 and 0w-40 recommended by the 4S store are good. If you don't know, you can clean out the oil on Taobao. Generally, the oil bucket will be marked on it‘ W 'means winter. The lower the number above, the better the fluidity at low temperature and the better the engine protection during cold start (generally, 10W or 5W can be selected for more choices in the south, and better engine oil can be selected for more choices in the North).
‘W’后面代表的是機油耐高溫的指數(shù)，數(shù)值越大說明機油在高溫保護性能更好，反之數(shù)值越低高溫發(fā)動機保護性能越差。不是機油越貴就越好，一般跑車發(fā)動機使用的都是機油10W-60甚至更好的，這種超跑機油特別稀，流動性，保護性方面肯定是特別好的，但是這種機油是不建議加到家用車里面的。（粘稠度太低容易會引起燒機油，機油會從活塞環(huán)，氣門等間隙流暢進去，當然所有的燃油車都是有正常機油損耗的）。就像是你月入3000去租超跑相親一樣，華爾不實。
The following 'W' represents the high temperature resistance index of engine oil. The greater the value, the better the protection performance of engine oil at high temperature. On the contrary, the lower the value, the worse the protection performance of engine at high temperature. It's not that the more expensive the engine oil, the better. Generally, sports car engines use top-grade engine oil 10w-60 or even better. This super running engine oil is particularly thin, and its fluidity and protection must be particularly good. However, this kind of engine oil is not recommended to be added to household vehicles. (if the viscosity is too low, it will easily cause oil burning, and the oil will flow in through the gaps of piston rings and valves. Of course, all fuel vehicles have normal oil loss). It's like you rent a super run blind date with a monthly income of 3000. Wall Street is untrue.
機油的更換周期，新車一般是5000公里保養(yǎng)一次（期間是建議多跑跑高速，讓發(fā)動機磨合更好），具體的保養(yǎng)周期要詢問4s店，因為像有些車，新車發(fā)動機里面自帶全合成油，10000公里保養(yǎng)一次，還有就是半合成機油7500公里每半年以先到為準保養(yǎng)一次。和機油一起換的還有機濾，放油螺絲和放油螺絲墊片（一般是4s店會更換，原廠放油螺絲是帶磁性的，會吸附機油里面的鐵屑，這個也就十幾塊，是建議一起更換的），機濾的作用顧名思義，說白了就是過濾機油里面雜質的，因為發(fā)動機運轉，里面鐵跟鐵摩擦是會產(chǎn)生鐵屑的。
The oil replacement cycle for new cars is usually 5000 km (during this period, it is recommended to run more high-speed to make the engine run in better). The specific maintenance cycle should be asked from the 4S store, because like some high-end cars, the new engine comes with full synthetic oil, which is maintained once every 10000 km, and the semi synthetic oil is 7500km, which is maintained once every six months, whichever comes first. The machine filter, oil drain screw and oil drain screw gasket are also replaced with the engine oil (generally, the 4S store will replace them. The original oil drain screw is magnetic and will absorb the iron filings in the engine oil. This is only a dozen pieces. It is recommended to replace them together). The function of the machine filter is as the name suggests. In short, it is to filter the impurities in the engine oil because the engine is running, The friction between iron and iron will produce iron filings.
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