Stihl KombiMotor 110, Stihl 026P saw and Ryobi combo handle get Stihl "Silver Bottle" premium oil with 93 octane gas that has alcohol in it. It's the only way it comes here... Even though the Stihl oil contains stabilizer I still use Stabil in gas for my 2 strokes, but less of it.
4 stroke stuff, JD GX335/20hp Kawi, Snapper 21" walker, Generac 7500W generator all get 87 octane regular with full Stabil treatment. As most do, I rotate my 4 5gal. cans and the generator tank as often as needed through the car.
My JD 1026r TLB gets road diesel + JD Winter Fuel Conditioner adjusted for the seasonal temperatures. (Just thought I'd toss that out there!)