新车磨合时会磨下金属接触面微小的不平之处,如果磨下来的金属碎未留下里面就等于齿轮箱里掺了沙子,铁沙子,果然当时放油时plug上的磁铁就吸了很多全属粉未。
新车磨合时会磨下金属接触面微小的不平之处,如果磨下来的金属碎未留下里面就等于齿轮箱里掺了沙子,铁沙子,果然当时放油时plug上的磁铁就吸了很多全属粉未。
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