Greetings from an old timer from CT. New to site but have been out of snowmobiling for couple decades. Have a 1981 Yamaha SS440 oil injection 1526 miles. ( original owner ) the sled has been dormant for 20 years. What oil type should I use ( non synthetic ) want to get it up and running, or at least cleaned up as I plan on selling it comes with a two place trailer. Thank You Joe
Old Timer Here
