Kohler gas engine fuel additive/treatments

[Bluejay27]

In a 28hp Kohler, I've used Amsoil quickshot (injector cleaner) occasionally and run regular gas without any issues in 2700 hours. Also running Amsoil 5w-30 and remote filter mount with a bypass filter, so I have oversized filters, added cooling capacity, and 6qt oil capacity. It was installed at about 1900 hours, so no definitive results yet on if it was worth it.