機油燒久了就變質分解結痂了，潤滑作用就下降，然後附在軸上，散熱差易燒軸。

來源: chinomango 於 2014-10-18 21:50:47 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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