汽车保养：一些容易被忽略的部分细节

汽车保养疑问解答一些易被忽略的细节我们平时对于车的保养可能只是简单地理解为
送到4S店或修理厂换换机油和滤芯之类的，其实在这里面还有很多的细节需要注意。

下面汇总的一些关于保养的疑问。

这些问题您可能平常不注意，这里汇总出来提醒您
多注意点。

Car maintenance question and answer some easily overlooked details we usually for vehicle maintenance might simply understood as to the 4S shop or repair shop for replacement of oil / and filter and so on, in which there are many details need to pay attention to. Some of the questions the following is a summary of the maintenance. These questions you could not usually pay attention to summary out here, remind you attention.
●疑问1、手动变速箱油（MT）、自动变速箱油（AT）、无级变速箱油（CVT）的区别？能混用吗？变速箱油的作用是润滑、降温和传递动力，但三种主流变速箱结构的
不同决定他们需要不同方式的润滑，因此决定了他们需要使用不同性能的变速箱油。

手动变速箱油：手动变速箱油就是平时说的齿轮油，作用只是润滑。

美国石油学会将
车辆齿轮油按使用性能分为GL-1、GL-2、GL-3、GL-4、GL-5、GL-6六类。

其中偏重
于重载的GL-1、GL-2、GL-3在市面上已经被淘汰，而目前家用车使用的普遍为是们是GL-4、GL-5（GL-6是客车使用的）。

从油品特点上来说，最直观的就是手动变速箱油比自动变速箱油的粘度要大，更换的周期普遍也比自动变速箱油要短一些，多数家用
车在4-6万公里更换手动变速箱油。

AT变速箱油：自动变速器油是专用的，它有两个作用，除了对行星齿轮组润滑、散热外，更重要的是作是传递动力，所以它的粘度不
像手动变速箱油那么“稠”。

而且它的主要作用是起到液压传动，因此流动性非常好，抗气泡能力也比手动变速箱油的要求更严。

不同型号的自动变速箱油是不能混加的，
因为不同型号的AT变速箱油的流动速率、密度、动态与静态磨擦性能、膨胀系数都有所不同。

部分厂家是根据AT变速器的特性推出了相匹配的变速箱油，建议车主还是在4S店更换或者购买相应的型号进行更换，不要自行更换其他型号。

CVT变速箱油：CVT变速箱油的本质与AT油类似，但它也是专用油，因为CVT变速箱是特质的钢链
传动的，需要油液的流速、摩擦性能、膨胀系数等参数都有所区别，所以不能用AT变速箱油代替。

相对来说，它比AT自动挡变速箱油还要稀一些，另外还要具有一定的阻尼摩擦力防止传动链条打滑。

关于三种主流变速箱的润滑油，相互之间绝对不能替换
和混用！油品相似的AT变速箱油和CVT变速箱油同样不能相互替代，如果真的替换
使用了，虽然短时间没什么影响，但是时间长了对于机械的磨损来说有不可恢复的影响。

就像葛大爷说的：“宝马的车头插一个奔驰的标，恐怕不合适吧。

”
● question 1, manual transmission oil (MT), automatic transmission fluid (AT), continuously variable transmission oil (CVT) difference? Mix? Transmission oil is the role / of lubrication, cooling and power transmission, but different decided three main gearbox structure they need lubrication in different ways, thus determines the transmission they require the use of different properties
of oil. Manual transmission gear oil: oil is usually manual gearbox oil said, only lubrication. USA Petroleum Institute will vehicle gear oil according to the using performance is divided into GL-1, GL-2, GL-3, GL-4, GL-5, GL-6 six. The emphasis on the overloading of the GL-1, GL-2, GL-3 have been eliminated in the market, and the current domestic car use generally / were GL-4, GL-5 (GL-6 bus is used). From the product characteristics, the most intuitive is manual gearbox oil is bigger than the automatic transmission oil viscosity, the replacement cycle generally than the automatic transmission oil is shorter, the majority of household
car at 4-6 million kilometers to replace the manual gear box oil. AT gearbox oil: automatic transmission oil is special, it has two functions, in addition to the planetary gear lubrication, cooling, more important is to make is to transfer power, so its viscosity than manual gearbox oil as "thick". But its main role is to hydraulic transmission, so very good fluidity, anti bubbling ability than manual gearbox oil stricter requirements. Automatic transmission of different types of oil is not mixed with AT gearbox, because different types of oil flow rate, density, dynamic and static friction properties, thermal expansion coefficient are different. Some manufacturers
is according to the characteristics of AT transmission is introduced with matching gearbox oil, suggested that the owner or in the 4S store replacement or purchase
the corresponding models were replaced, do not replace other models. CVT gearbox oil: CVT gearbox oil essence and AT oil is similar, but it is also a special oil, because the CVT transmission is the steel chain transmission characteristics, need oil velocity, friction, coefficient of expansion is different, so you can't use AT gearbox oil instead of. Relatively speaking, it is the AT automatic transmission oil to dilute some, also has the certain prevent damping friction drive chain slippage. Lubricating oil on three main gearbox, between absolute cannot replace and mix! Oil AT gearbox similar oil and CVT gearbox oil also can not replace each other, if it replaces the use of the short time, although not what impact, but a long time for the mechanical wear is not recoverable. Like GE uncle said: "BMW head inserted a Mercedes standard, I'm afraid not appropriate."
●疑问2、为什么转向助力油用的也是AT变速箱油？是用错了吗？很多细心的朋友有这样的疑问：在对需要更换转向助力油的车辆进行保养时会发现，有些品牌的助力油
瓶子上写的是自动变速箱油。

放心，4S店没有给错东西。

转向助力油和自动变速箱油都属于上面说的液压油，因此可以通用。

● question 2, why the power steering oil is also used in AT transmission oil? Is wrong? Have such doubt many careful friends: for maintenance on the need to replace the power steering oil vehicles will be found, help the oil bottle some brand is written on the automatic transmission oil. Rest assured, 4S shop did not give the wrong things. Power steering oil and automatic gearbox oil belongs to the hydraulic oil to the above said, so can be used.
●疑问3、为什么换完机油后还让车辆行走一段距离后再检查油位？在更换完发动机机油后，需要用机油标尺进行粗量，所以如果这样加完着车就走的话，会发现刚刚加到
位的机油就出现亏缺现象。

这是由于在静态加油后很多零件之间的空隙没有完全注入
新的机油，比如各种导油孔内，所以在换油完毕后一定要启动发动机后再次进行测量，让机油充分跑到相对应的油位里。

这时候一般会出现少量亏油现象，再次添加到标准
位置即可。

建议去4S店保养时注意这个细节。

● question 3, why changing the oil after make vehicle walking a distance and then check the oil level? In the replacement after the engine oil, the need for rough with the engine oil dipstick, so if it adds a car go, will find that just added to the bit oil shortage phenomenon. This is because the gap between the many parts in the static gas after not inject new oil, such as oil guide hole, so be sure to start the engine again after the measurement in oil after the oil, make full to the level corresponding to the. At that time usually appear a small amount of fuel deficit phenomenon, again added to the standard position. Recommendations go to
the 4S store maintenance when the attention of the details.出师表
两汉：诸葛亮
先帝创业未半而中道崩殂，今天下三分，益州疲弊，此诚危急存亡之秋也。

然侍
卫之臣不懈于内，忠志之士忘身于外者，盖追先帝之殊遇，欲报之于陛下也。

诚宜开
张圣听，以光先帝遗德，恢弘志士之气，不宜妄自菲薄，引喻失义，以塞忠谏之路也。

宫中府中，俱为一体；陟罚臧否，不宜异同。

若有作奸犯科及为忠善者，宜付有
司论其刑赏，以昭陛下平明之理；不宜偏私，使内外异法也。

侍中、侍郎郭攸之、费祎、董允等，此皆良实，志虑忠纯，是以先帝简拔以遗陛下：愚以为宫中之事，事无大小，悉以咨之，然后施行，必能裨补阙漏，有所广益。

将军向宠，性行淑均，晓畅军事，试用于昔日，先帝称之曰“能”，是以众议举宠为督：愚以为营中之事，悉以咨之，必能使行阵和睦，优劣得所。

亲贤臣，远小人，此先汉所以兴隆也；亲小人，远贤臣，此后汉所以倾颓也。

先
帝在时，每与臣论此事，未尝不叹息痛恨于桓、灵也。

侍中、尚书、长史、参军，此
悉贞良死节之臣，愿陛下亲之、信之，则汉室之隆，可计日而待也。

臣本布衣，躬耕于南阳，苟全性命于乱世，不求闻达于诸侯。

先帝不以臣卑鄙，
猥自枉屈，三顾臣于草庐之中，咨臣以当世之事，由是感激，遂许先帝以驱驰。

后值
倾覆，受任于败军之际，奉命于危难之间，尔来二十有一年矣。

先帝知臣谨慎，故临崩寄臣以大事也。

受命以来，夙夜忧叹，恐托付不效，以伤
先帝之明；故五月渡泸，深入不毛。

今南方已定，兵甲已足，当奖率三军，北定中原，庶竭驽钝，攘除奸凶，兴复汉室，还于旧都。

此臣所以报先帝而忠陛下之职分也。

至
于斟酌损益，进尽忠言，则攸之、祎、允之任也。

愿陛下托臣以讨贼兴复之效，不效，则治臣之罪，以告先帝之灵。

若无兴德之言，则责攸之、祎、允等之慢，以彰其咎；陛下亦宜自谋，以咨诹善道，察纳雅言，深追
先帝遗诏。

臣不胜受恩感激。

今当远离，临表涕零，不知所言。