感觉机油这东西相同型号不同品牌都差不多。心理作用大过产品本身的区别。
不一定。合成机油还要看是哪种。 最好的应该是 PAO。
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Synthetic motor oils are man made oils from the following classes of lubricants:
Polyalphaolefin (PAO) = American Petroleum Institute (API) Group IV base oil
Synthetic esters, etc = API Group V base oils (non-PAO synthetics, including diesters, polyolesters, alklylated napthlenes, alkyklated benzenes, etc.)
Hydrocracked/Hydroisomerized = API Group III base oils. Chevron, Shell, and other petrochemical companies developed processes involving catalytic conversion of feed stocks under pressure in the presence of hydrogen into high-quality mineral lubricating oil. In 2005, production of GTL (gas-to-liquid) Group III base stocks began, the best of which perform much like polyalphaolefin. Group III-base stocks are considered synthetic motor oil only in the United States;[13] elsewhere they are not allowed to be marketed as "synthetic".
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美国沃尔玛Mobil 1合成机油$25(加拿大CT卖47),分低里程和高里程2种。干嘛不考虑这个呢?
一个月前,我把super store货架上的10W30都买了。也就4桶。每桶 12元。特价,全合成机油。够用一年了。
为什么老车不要用合成机油,我看到mobile1 有老车专用合成机油.