Looking for some opinions here... Choose to run Delo 15w-40 in my truck because, at least based on spec. sheets, it looks like the best mineral-based HDEO 15w-40 out there. With that said though, I'm getting kinda interested in Pennz. Long-Life, pretty much solely for the fact that they use Moly in their CI-4/SL formulation. Can some of you guys here give me some more insight on the moly issue and the benefits/negatives of it (hey, I just started reading my book, so I don't know a great deal yet!) and whether it makes Long-Life a competitor to Delo?