我搞反了。稠密對發動機啟動沒有清薄的佳，但運轉時對零件的保護比較好；清薄的機油比稠密的較省汽油。

來源: 老金工於 2019-11-08 19:47:06 [舊帖] [給我悄悄話] 本文已被閱讀：次

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