I'm about to leave town on a work trip for 3-5 months. I'll be leaving my bike in my garage and I can get my roommate to turn it on and run the engine for me once or twice a week. I know this will be good for battery charge and oil turnover, but will that solution be good enough to keep the carbs/fuel system in good working order if it's the same gas sitting in the tank for that whole period? My roommate doesn't ride and is not mechanically savvy, so I can't count on him to do much other than turn it on and run it. I will be leaving him with an empty gas can in case the bike ever needs fresh gas while I'm gone, anything else I can/should do?