Seeing as Im a homeowner and would only realistically be using the saw a handful of times a year, I got a gallon of Motomix as they had it 50% off. I already had a six-pack of Husqvarna 40:1 mix oil. My plan was to use the oil when working the saw and store it dry after burning some Motomix through it. The dealer seems to think highly of the Motomix for sitting long term.
So stay away from the ultra? Is the Ultra the same as Motomix?