If you have recently changed the oil before winter storage, that is just about as good as a change when entering storage. If you are nearly due a change at the end of the season, do it BEFORE storage and run the machine after the fluid change. It does little good to install fresh oil but leave the old oil IN THE BEARINGS. The first start of the new season will be especially dry if the oil has drained down all winter and you do the first spring start with a brand new, DRY oil filter. If you will be adding fuel stabilizer along with the oil change, going for a ride with the stabilizer in the tank will get it into the carb or fuel injectors for the off season. Changing oil and adding stabilizer WITHOUT running the machine afterward is better than not doing it at all, but it is still a job only part way finished. Circulating the NEW stuff into the places where it belongs finishes the job. This applies to any internal combustion engine going into seasonal storage.