I've been investigating pretty much every 5w20 oil on the market for my new ride. Since I have used Schaeffer 5w40 diesel oil in the past with great success, I am curious about the 5w20. In searching this site I haven't been able to find much info. One UOA looks incredible while a couple of other people claim disappointing results. In viewing the specs for this oil I am a little concerned with a NOACK volatility of well over 13 and a TBN of only 7.5. I realize these are only a small part of the whole equation but most of the other oils I have researched seem to have better numbers. Several of us have talked about going together and purchasing a large order of Schaeffer oil so I am very interested in this product. My driving style is fairly conservative with 40 mile trips and virtually no short trips or idleing. I am planning on running around 5500 OCI with a Wix filter as long as I have warranty. Would I be better off with any of the other top flight 5w20 oils (MC, M1, PU/PP, Kendall, etc) or would Schaeffer be just as good? Thanks for the input. This site is incredible for people like me that aren't overly mechanically inclined but like to run good stuff.