I have a Honda portable inverter generator that I believe is one of the best out there, except when it comes to oil changes. Even though it has a spout and tray for draining oil, the oil still drips down the side of the generator and makes a mess.
I took a small plastic aspirin bottle and cut it in half vertically. The bottle is about 3 inches tall and 1¾ inches in diameter. Then I cut a small “V” in the bottom of the bottle with a razor knife. When changing the oil, I place the half bottle on the drain tray and push the “V” part under the fill plug. When draining oil, this little funnel clears the side of the unit, and there is no mess.
After Hurricane Irma, our generator ran for six days, 24 hours a day, so several oil changes were needed.
Gary Zielicke | Clewiston, Florida