回复：那原来3K是什么条件？

来源: Yangtze430030 于 2012-02-03 09:05:12 [] [旧帖] [给我悄悄话] 阅读数 : (252 bytes)

Modern (or even older) engines do not need 3K schedule.  It's more of oil company's misleading.  It's over conservative.  Most car engines need 5K for severe and 75K for light conditions.  But we rarely have light conditions.

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