Just drove my nextdoor neighbor's new Golf TDI... W O W ; awesome acceleration; impressive engine and tranny and very credible handling for a FWD diesel (I played Michael Schumacher with it). I want one because it is awesome and, you know, to serve as an attractive carrier for my German Syntec [you knew I had to sneak that in.]) As you can imagine, one of the first things I did was check out the oil portion of the owner's manual. I was surprised to see that the recommended oil in a 2003 was SJ (not even SJ/CF) and the accompanying illustration even showed SH! (I was expecting to see SL/CF). The recommended viscosity was 5W40 and the manual made it VERY CLEAR that that was what you were to use...but you could use 5W30 if you couldn't find 5W40. The manual was full of warnings in the oil section, especially in regard to checking the oil and interpreting the dipstick markings. I didn't get to oil filter recommendations, but my neighbor said a friend of his who had a turbo go south on him told him it is critical to use the VW filter. My neighbor also said he was under the impression he had to get his oil changes done at the dealership. To help him out, do any of you VW/VW Turbo/TDI owners have any tricks of the trade I can share with him so he does this thing right? He is the kind of guy who will keep a car for 300K miles and so I want to help him achieve his goal.