I changed my oil at 13000 km at Sept 15 and put Amsoil 10w 40 in. I will probably put 1500 to 2000 km on the engine before storing it for the winter in late October. The bike will be stored in above freezing at about 5 to 10 degrees Celsius. Should I drain the oil and put fresh oil in for storing it for the winter or just run the oil till I hit the 19000 km mark and do the oil change at the regular interval.