Hey, I just bought a chainsaw last week. In the owners manual, it say's that chainsaw oil is the same viscosity as 30w motoroil, and that you can use 30w motor oil instead of chainsaw oil.
I use Bel-Ray chain lube, it cling's to the chain better. I think chainsaw oil should lube your chain just fine, but not sure how well it will cling to the chain. It might make a mess.