According to the manual 2.0T shouldn't even be using 5w20, it's too thin to properly protect turbo componentry. Becareful with that.
That said, the manual recommends 5W30, as long as you use synthetic 5W30 should be good all year round (because it doesn't deteriorate as fast a regular oil).
You can use 10W during the summer and 5W during the winter, or 5W throughout.
I don't have much experience with 5W40 oils, but according to the number, it should have even better shear resistance than 5W30, but I usually just follow the manual. I suggest you do the same.
*EDIT*, weird, my paper manual says 2.0T should use 5W30 or 5W40, but the US downloadable manual says 5W20/5W30/5W40?!? Either ways I think it's too thin, go with 5W30 or 5W40.
Nordschleife 3.8 base CAN Spec (LSD, HID,FOG, Infinity stereo, etc.)
VISUALS: TSW Nurburgring, M&S trunk lip, Wing emblems, APEXI cap, NRG carbon knob, MTec highs, Nokya fogs, Sparco pads, DD stage 3 LED kit
PERFORMANCE: Luxon strut bar, Magnaflow cat back, AEM filter
Tsukuba 2.0T base CAN Spec (Fog, alarm etc.)
VISUALS: APEXI cap,Motegi SP10, NRG Carbon knob, Luminics fogs, Wing emblems, Sparco pads
PERFORMANCE: HPP strut brace, Magnaflow cat back, AEM filter
Last edited by loco_stevie; 11-04-2009 at 10:40 AM.