Agree 普通车在常规保养和驾驶情况下不时必须使用合成机油. But the major reason we need to change oil is because of (per)oxidation/degradation and thus the oil loses it's lubricating property. Since synthetic resists heat-induced oxidation then why can not we change it less often? Synthestic one is advertized as lasting longer. I know regular oil needs to be changed every 3-5 K is an overkill. Synthetic is uaully changed every 10-15 K. Since Volvo requires change of regular oil every 10K already, which is probably why they do not recommend a change more than 10K. I am also surprised that Volvo asks change fo regular oil every 10K but synthetic every 5K (I may understand wrong, you are talking about regular oil every 5K?). I am not auguing but just want to confirm since the statements are not consistent and do not makes sense to me.
回复:回复:回复:回复:机油哪里去了? “车有三谬,先说其一:合成机油。”
所有跟帖:
• 10K和5K是不同地方的建议。我起初3K换一次,后来5K,现在一年一次 -狼主- ♀ (420 bytes) () 11/15/2010 postreply 15:59:08