Quote:
Originally Posted by gmtech1
The 2.0l requires synthetic 5-30, GM recomend Mobil 1. The 2.2 and 2.4 also require 5-30, but does not need to be synthetic. I would recomend any good quality oil but GM requires the oil to meet their standards (GM6904M). Make sure the oil bottle has the API (American Petroleum Institute) "Starburst" symbol on it.
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Where does it say that GM recommends Mobil 1 over other brands of synthetic oil?
I've used Pennzoil Platinum which meets GM6904M and GM4718M and has the API Starburst symbol. I've even considered the next higher Pennzoil synthetic from the Platinum, I believe it's called Ultra.
The owners manual specifies GM6904M but doesn't specify a brand. I actually am more concerned about the quality of the oil filter I put in due to the varying grades of oil filters for the 08 that I own. I usually buy PureOne filters because of the finer filtration they offer. That helps with the longer oil change interval I am running with the Synthetic Pennzoil--longer, that is, than I would run with regular oil instead of synthetic. But there are other filters just as good as those. What I avoid are the lower quality, cheap filters. The filter size is very small, so I want the best quality there as well as the oil.