40 可以用30,但不建议用50. 同理,5W可以用0W,不建议用10W。用了,也没什么

来源: 2013-04-24 12:43:48 [旧帖] [给我悄悄话] 本文已被阅读:

就是对发动机不好而已。when the engine is old--burning engine oil, then use thick oil to stop leaking.