Stihl makes soy oil based chain oil - you can get it at mcguckin in boulder, so it must be relatively available. I bought some to try it and its fine. Unlike ot

Stihl makes soy oil based chain oil - you can get it at mcguckin in boulder, so it must be relatively available. I bought some to try it and its fine. Unlike other uses for lubrication - the relatively short life of chain oil (most is expelled quickly) means that oxidative drying isn't really an issue.