I'm looking at a 2006 52DB with ~288 hours on the QSM11 engines. I had oil samples pulled after a sea trial the other day, the starboard engine came back with a 5.5% "Fuel Dilution" reading in Contaminants on the oil analysis report. The notes from the lab on this point read "Since unit is new, rings may not be completely sealed and allowing fuel to get by the rings.". That's all the information I have so far (I've gone back with some more questions and am waiting on answers). Anyone have any thoughts on this reading? How concerned would you be/should I be? Is it common given the age/hours? Is it something that would cause you to walk away from the boat, or something that you would still buy the boat with (but then have some specific checks/work done, and if so what exactly would you ask the mechanics to do?)? etc. etc.