I had planed on using this guy once my plane was up and flying. Seems like a guy that is involved in auto conversions might be a bit more in tune with the experiential market. Not sure.
https://flycorvair.net/?s=Oil+AnalysisMight be worth a call to see how many VWs he has in his data base.
EDIT: I gave Larry a call and he doesn't have that many VWs in his database either. He stressed that the usefulness of oil analysis is the trend. For new engines he recommended starting the analysis at the 25 hour oil change. He also recommended flushing the oil cooler at the 10 hour oil change to get any "breakage" that may have accumulated during the initial break in out of the system so that the 25 hour oil change would give good results on which to base the trend.
Wes
P.S. I've worked myself into a bit of a pickle with the fuel system so I'm sitting at the keyboard looking for answers :-)