Greg, as much as I would like to, I think that with a small amount of investigating, you can get the info. The web has made things so easy. No, Mobil was never even mentioned in this article. Many folks here at TBN use Mobil sysnthetic and find it great. I have yet to read an article that suggests any petroleum based oil exceeds any synthetic oil in the oils ability to lubricate at temperature extremes, pourability at freezing temps, volatility, wear etc. I would suggest that if the Mobil oil your using is serving you well, thats all that really matters. We can point out some of the relatively minor benefits Brand A has over Brand B but at some point, were picking fly poop out of the pepper. Rat....