Question for you guys...the bike now has 300km, and the season is pretty much ended for all we know. What should i do with the "break-in" oil? Should i drain it or should i leave it for next year? Iirc the manual says to drain it.
That's a good question. That's only 180 miles. I can tell you this, the engine is far from being broke in at this point. Contact your dealer and ask them for advice is one thing I'd recommend.
I'd try to get it as close to the 1000km service as possible. I don't know your weather situation, but if it's dry and just cold I'd probably tough it out. If it's worse conditions or freezing that are dangerous. I rode in 30F temps (probably 1-3C) a couple times this year, it really wasn't bad as I put my winter coat on under my riding jacket instead of the liner. My mesh gloves left my hands cold, but nothing dangerous. I'm going to ride to work tomorrow morning and it'll be in the 40s, but then 70s during the day so I'll ride at lunch and then the evening.
I'd either hurry up and get at least 700km on it (over 400 miles) then do the change or leave it in at this point. The break in oil has a purpose, and I'd hate to see your motor not broke in properly because the break in lube was changed out too early. My only concern is what might happen to loose particles if the all settle into one area of the engine then get sucked in when you start it next year.
The other thing to think about is if you get it to 1000km you can do the full break-in service over the off season, definitely do all the bolt tightening stuff and other things in the service, I can pretty much guarantee you will find loose bolts, I found around 8, including the rear caliper mounting bolt and RH clip on mount bolts.