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(jí)，很多車友都問(wèn)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(jī)油，一般機(jī)油桶上面都會(huì)標(biāo)注。‘W’表示winter（冬季），前面的數(shù)字越低說(shuō)明在低溫的流動(dòng)性越好，車子在冷啟動(dòng)時(shí)對(duì)發(fā)動(dòng)機(jī)保護(hù)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(diǎn)的機(jī)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(jī)油耐高溫的指數(shù)，數(shù)值越大說(shuō)明機(jī)油在高溫保護(hù)性能更好，反之?dāng)?shù)值越低高溫發(fā)動(dòng)機(jī)保護(hù)性能越差。不是機(jī)油越貴就越好，一般跑車發(fā)動(dòng)機(jī)使用的都是機(jī)油10W-60甚至更好的，這種超跑機(jī)油特別稀，流動(dòng)性，保護(hù)性方面肯定是特別好的，但是這種機(jī)油是不建議加到家用車?yán)锩娴摹＃ㄕ吵矶忍腿菀讜?huì)引起燒機(jī)油，機(jī)油會(huì)從活塞環(huán)，氣門等間隙流暢進(jìn)去，當(dāng)然所有的燃油車都是有正常機(jī)油損耗的）。就像是你月入3000去租超跑相親一樣，華爾不實(shí)。

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(jī)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(dòng)機(jī)磨合更好），具體的保養(yǎng)周期要詢問(wèn)4s店，因?yàn)橄裼行┸嚕萝嚢l(fā)動(dòng)機(jī)里面自帶全合成油，10000公里保養(yǎng)一次，還有就是半合成機(jī)油7500公里每半年以先到為準(zhǔn)保養(yǎng)一次。和機(jī)油一起換的還有機(jī)濾，放油螺絲和放油螺絲墊片（一般是4s店會(huì)更換，原廠放油螺絲是帶磁性的，會(huì)吸附機(jī)油里面的鐵屑，這個(gè)也就十幾塊，是建議一起更換的），機(jī)濾的作用顧名思義，說(shuō)白了就是過(guò)濾機(jī)油里面雜質(zhì)的，因?yàn)榘l(fā)動(dòng)機(jī)運(yùn)轉(zhuǎn)，里面鐵跟鐵摩擦是會(huì)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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