※ 引述《Soochyang (严小骚)》之铭言：
: 如题
: 之前在版上有看到新车开长途不要用定速
: 想请问大家为什么？
: 那要开到多久才适合使用呢？
: 谢谢大家
战一下
wiki有
http://en.wikipedia.org/wiki/Break-in_%28mechanical_run-in%29#Start_high_power
In the past, the engine break-in period was very important to the overall
life and durability or the engine.
The break-in period required has changed over the years with improved piston
ring materials and designs.
The break-in period now (5-10 hours) is short in comparison with that
of engines of the past.
Aluminum cylinder bore engine piston rings break-in faster than those
used on cast iron cylinder bores.
以前磨合期比较长，现在磨合期合比较短(5-10小时)，铝合金汽缸磨合较快
不过要不要大操...老外也在战，目前没结论，但有共通点
1.不要急拉转，有的说1500rpm就好，有的说至少4500rpm
但两方都同意不要一下就大油门拉转，缓缓拉上去
2.现在汽车生产制程跟材料的改变使得磨合期程序也有变化
3.的确有磨合期这种东西，有些要求高的磨合完还要再重新锁紧
4.到底要怎么磨合还是没定论，各车种各组件磨合程序也不一样