For the last few years, I’ve purchased the 2-stroke quarts from Home Depot. Maybe 3 or 4 quarts over the course of a year. Since I started this, zero problems and the OPE starts within the first few pulls.
For lawnmower or snow blower, I just fill a 2.5 gallon can with 93 octane and treat with Stabil and a dose of Berryman B12. I go thru this batch more quickly so E10 doesn’t have a chance to mess me up (can’t get E free anywhere around here)
Not crazy about the cost of the quarts from Home Depot, but better than messing with carbs IMO