车辆油液使用和更换杂记
我是极不喜修车但确实比较喜欢保养车辆，本末倒置的事情不是我这个工科寂寞汪的专长!
刚才在老外的一个车坛看了一片求助帖觉得很有教育意义：
Transmission "growling" at idle...
大致是自己更换变速箱液及内部油封后出现了非正常噪音，这是一个网友的回复我个人感觉很中肯，特地将内容转过来：
Here's my tips and things to consider:
A. Make sure when refilling the trans fluid, the car is on a neutral level.....meaning the front or rear are NOT tilting up or down. I assume you have it on a lift of some sort.
B. Reason I drained or replaced my trans oil because I replaced my torque converter. So that being said, Its a must to flush my trans fluid. A full trans oil replenishment for me was about 8-81/2 quarts. I believe yours was JUST draining it without torque converter replacement. Here's my math.....about 1 quarts of oil to refil the torque converter and the rest is 7 1/2. If yours is WITHOUT torque converter replacement you must be putting only close to about 7 quarts. Lesson here is to be mindful NOT to overfill. Ok?
C. Once you have your diagnostic tool, RESET involves 2 things. Disconnect the negative battery for about 15-20 mins then Reconnect it. (This is your first reset.) The second reset will be on your diagnostic tool. (Adaptation reset).
D. Did you put the right trans oil specs requirement for your transmission? ZF transmission (which most BMW trans have) tend to be very fuzzy about the brand and type of trans oil. Very picky and fuzzy. Very preMadoona I would say. Each ZF trans MUST meet a specific trans oil specs. Mine was a 5HP19 trans. Whats yours? My recommendation is a simple call to Erikkson Industries. (800-388-4418) and ask for the specs trans oil you need. They are the guru of ZF transmissions based in Connecticut. Ask for John. ZF trans oil is expensive..about $16.00+ per quart. Ask John what's the Specs requirement for your trans. Then compare what you just used. Is it a big deal if you go against the specs? Personally I will follow what the guru says. Roll the dice as the saying goes.
C. I'm attaching a picture of the diagnostic tool I have which I purchased on eBay. A lot of us here uses a generic brand of diagnostic tool. To me it's a waste of money. My simple motto: pick the RIGHT tool for the job. My diagnostic tool has SPECIFIC features for my E39 which the generic DO NOT have. This is also the main reason as to why MOST of us here go bananas. I noticed here in the forum that majority has a Generic brand diagnostic tool. I learned this lesson the hard way. Generic diagnostic tool will shoot a lot of fault codes and here we are tend to panic. Lesson: It's NOT the right tool. Hope you Get my point?
Here's the brand I use.....http://www.icarsoft.com
Hope these pointers are enlightening and not confusing ***55357;***56841;
Any questions....feel free to ask.
也许有人会问，这和我的车有什么相干呢？
其实表象的东西千差万别，可本质的东西是有章可循的。
这位网友其实在说三件事：
1：更换油液时车辆需要的位置状态
2：选择正确的油液和用量
3：车辆诊断工具的选择
细看这些都是车辆保养最基本的操作知识，也是我这些年来发帖极力“鼓吹”的做法，同时也是我远离高大上修车的法宝，我的原则是惹不起咱还躲不起吗！
因为最近这周在给车换机油，所以顺便说说机油的事情。
目前家里的两辆车如果按里程间隔换机油大致需要两年或三年，因为开的少这些年我一直是按年度换，即使是只开了几百公里【油滤就不换了】。
现在车辆的复杂程度已远非20-30年前的老车那么简单，大家都要低扭节能还要减排，机油也不仅仅是润滑除杂降温那么单一，很多燃烧的控制都要使用油压来控制，所以对机油的寿命和品种有了更高的要求，特别是德系车有很多是正时链的，这种多处需要大量良好油品来保证引擎及相关控制正常或较佳运行的车辆更是要注意保养，除非车辆本身设计缺陷，一般而言根据自己的情况有意识地调整保养周期多会延缓或杜绝这些车辆的常见“病”。
是因为看了最前面老外的帖子有感而发随便说说，如有不严谨的地方欢迎拍砖。
soccer88
2016-08-25 13:20:27好久没有见你的猫咪了