http://www.getg.com/articles/article_detail.php?ArticleID=97 I first heard about this company about a year ago and have been watching it on and off. Their 5w-30, the first of their 4 stroke oils, has hit shelves recently and I've been considering trying it. Before I do, I was hoping to get some discussion started about it on here. You guys know significantly more about oil than I do so if you think I should stay away then I will. My car has about 137k miles and I normally use Castro or Pennzoil high mileage.