MX2T is a good product, don't get me wrong, but I doubt if it will cover for bad gas.
I think the only solution for most of us is to get gas from stations that do decent volume and don't try to hold on to it for long. I live in snomobile and boat country; a few selected stations have "off-road" gas, and I have also seen gas for antiques and classics. No alcohol or MBTE. Snomobile dealers tell customers flat out that using car gas is chancy; pay the extra, and don't spoil your weekend...especially if you aren't going to use the sled again soon.
I bet your chainsaw will like it too, if you can get it. For southerners, check marinas and boat ramps, or see if there's a station that serves racers.
Or just buy fresh gas, often.