非合成油 is almost like a commodity. If the price is

about the same,there is very little difference in the base oil property. Some may claim the cleaning power is better. But that means you may want to change oil faster, at least the first oil change. Some claims longer life, but if you follow regular schedules (3,000-4,000 miles/most cars), they are no better. So it is very hard to define A oil is better than the B oil if they are all group 2 stock oils.

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多謝指教 -滿地找牙- 給 滿地找牙 發送悄悄話 滿地找牙 的博客首頁 (0 bytes) () 09/10/2010 postreply 07:01:46

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