Hi Richard, the age old problem of a leaking radiator seems to be very common. Quite often the weep is very slight but also very annoying. I would be surprised if their is corrosion present on such a new car though. Think you are on the right track trying to establish exactly what is occurring. If you can access someone with easimap and a download lead it will be so much easier though. Depending on the area that you live I would have thought that there would be a club member able to assist with that? Hope it all works out for you though, kind regards Colin