Should I add Sea Foam to my scooter that has been sitting for months? [SOLVED]

Thanks for the question!

Here’s what I’d do: your first goal will be to clean up and fuel gum and varnish that formed while the scooter was sitting (or has built up over the years). Add 8 oz of Sea Foam and 16 oz of gas to the tank. Start it up, let it run for 10-15 minutes, and let it sit overnight. Start it up the next day and let it run a while. After that, run it as normal and add 1 oz of Sea Foam per gallon of fuel to prevent fuel residues and deposits from forming and fuel from degrading.

As far as the oil goes, I’d change it and then add 1 oz of Sea Foam per quart of oil. That will clean up oil residues and prevent them from forming.