Mac,
All of the loggers that I have talked to (there are a lot of them here
in Oregon), the saw shop where I bought my Husky, and the factory rep
from Sthil who did a chainsaw safety demo for our club said to use
premion grade gas. Gas degrades fairly quickly, and if you don't use is
up within a month, and don't use a stabilizer, it is bad for your saw.
If it has been since last summer, the gas should be thrown out.
robo hippy