Just a little tip to all the folks that run 2 cycle equipment. I asked a question on a well-known Arborist site regarding using the same 2 cycle mix for all equipment. I run 9, that's right 9, different 2-cycle pieces of equipment. Each has their own oil mixes and 1 gallon cans. That's alot of juggling around of containers. Well GOOD NEWS. The responses I got back on that site were a welcome read. It seem that Stihl has a Synthetic oil called Ultra, that is a 50:1 mix that can be used seemingly in ANY 2 cycle engine. Most guys on their use it, and have all good to say about it. SO LONG all you one gallon containers.