Seems like many DIT engines are having trouble with fuel dilution, there were discussions about a couple of 3.5l Ecoboosts recently showing signs of it in their UOAs. I think there was a possible TSB from Ford being discussed, definitely worth checking with your dealer and poking around online about something from Honda.
My oil just reeked of gas the first time I changed it myself (20kmiles in), hasn't been so bad since then...not sure if Subaru has ever changed their code to try to address fuel dilution problems in their 2.0l turbo.