手册上是这么写的：
On page 11-12 of the 2012 Chevrolet Malibu owner's manual it reads:
"Engine Oil- Use only engine oil licensed to the dexos 1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos 1 Synthetic Blend is recommended. See Engine Oil on page 10-10."
On page 10-11 of the owner's manual it reads:
" Viscosity Grade-SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50.
我查了一下Oreilly的网站，很多full synthetic oil也宣称 Meets GM Dexos 1 (Tm) Specification， 比如这个full synthetic 的价格觉得和synthetic blend相比也差不多：
那我可不可以用这种full synthetic oil来延长换油间隔？
