哦,2011 Corolla用合成油是蒙人吗?

我木有 2011 Corolla,网上搜了搜,貌似从2011开始Corolla原厂就是用的合成油0W20哦

http://www.toyota.com/t3Portal/document/om/OM12D65U/pdf/sec_06-01.pdf   P473-P474

http://www.toyota.com/owners/web/pages/parts-service/parts?categoryId=32052&partNo=part

中间提到: 

Synthetic Motor Oil
Many new Toyota models are certified for a new, zero weight synthetic lubrication standard, or 0W-20. This lower viscosity oil pumps better when cold, yet provides uniform lubrication, reduced friction and better overall efficiency than conventional engine oil.

• Improves fuel economy
• Improved thermal stability
• Longer oil change intervals

用google查 2011 Corolla synthetic or not, see other guy's discuss.