Has anyone found issues in older gas generators using the current ethanol gas. Ours is a 1999 Onan 5500. I'm wondering if I should have any concerns or look for any telltale signs? Chuck
If all you can get is ethanol laced fuel, you're stuck with it. If you have a shutoff valve between the tank and genset carb, it's best to shut it off and let the genset use up the fuel on the carb. I use that approach with all small engines when possible. If there's no shutoff, next best thing is to use Stabil or Seafoam in any fuel that sits for extended periods, to avoid potential phase-separation.