I ran this saw in Oct. Don't know what fuel it had in it? But it was pretty darn fast! Fastest saw through the Cant that day. This was the last GTG.. The owner will probably see this and better comment on it. But I don't know much about it. Other than it was MEAN.
Here's one cutting Red Oak w/ round chisel chain. It's one of my work saws.. One of my favorites, even if it is a dirty old Stihl.