I have a 2021 Vespa GTS 300cc Scooter that sat over winter with a 1/2 tank of fuel and I suspect there is mild water condensation from sitting gas. The tank is 9.10 Litres / 2.4 Gallons. How much Sea Foam Motor Treatment should I add to the tank before refilling?
Good question. Here’s what I’d do:
Hope that helps!