Has anyone ever confirmed that this stuff will perform as well as Chevron Supreme? Anyone planning an analysis? Some say the two oils are the same, but Chevron says they are not.
I was using Havoline and thought they were the same. I then put some Chevron Supreme in both cars. And my gut feeling is that they are not the same. Both cars get much better mileage and run and idle better. I don't think they are the same. Although i called Chevron a while ago and the tech i talked to said they are the same. This is just a job for these guys they don't really care what they say. I think Havoline and Chevron are different oils. I prefer Chevron.
