I use Mobil One V-Twin Full Synthetic 20w-50 oil in my bike. Getting ready for the last ride of the season, so I'll be putting it away til Spring. I have about 18-1900 miles on the oil since I changed it. Would you change it again before storage, or just put it away and ride it a few more thousand miles next year before changing? I know all the stories about dirty oil in your bike over winter, etc., and I've always changed my oil before putting my bike away. But it seems a waste of $$$$ to throw out $11.00 per qt. oil after less than 2,000 miles. what do you think?