We have a zero turn Deere F935, 1986, that has used fuel straight from the can it's entire life, two tanks, one or the other is always full, half full or empty, winter fuel in winter, summer fuel in summer, the previous owner knew nothing of filtering. The number of times it's been down for fuel related issues has been none. The old 4020s had fuel filters, used fuel from a 500gal leaky tank, and we would just unscrew a little, dump the water and tighten back up again. Yet the new Kioti, I'm obsessed. Go figure. Mr funnel, fuel additives for h2o, make sure the tank is always full, and the see through filter at 600hrs on it looks pristine. Part of it is I don't want to fool with diesel. And part of it is there are better ways. A couple gallons gets me 3hrs use, which get's me through most chores, so that's where I'm at. 5gallon cans, treat, mr funnel into 2gal container, store till needed, keep the tank topped off.