Check out this stuff also. I've been using it for over a year now.
My dad put this stuff in his grass trimmer and it sat for 4 years.... asked if I could borrow it and it started up on the 2nd pull and ran like it had fresh grass. I would let mine sit over winter and when I go to use it in the spring it runs like crap unless I put new fuel in it...
From what I hear this stuff is better than sta-bil. My dad is also a yard equipment dealer and some of the equipment manufacturers say this is the stuff to use. I think one of them that says it the stuff to use is STIHL!
Tow rig - 2006 F350 with some goodies
Trailer - 2014 T27FQDX
Toys - 2005 yfz450 with some goodies, 2005 rhino 660