I have been reading a lot on this board and started having some ideas on what oil I could run. Currently running Amsoil 5w 40 in my VW TDI but seriously looking at running a 5W 30 like a Redline. AE Haas has some excellent pointers in his Motor Oil fax http://18.104.22.168/motoroil/. The 5w30 will meet my specs but also will pump more oil over the hotter engine components because of the lighter 30 oil. I picked Redline because of the higher HTHS found in this oil package. A 0W 40 is also considered. Knowing 90% engine wear is at start up, a 0w 40 would be ideal. So pondering a 0w 40 with excellent start up protection or a 5w 30 with increased oil flow over engine components while running??? Any ideas which way to go?