Clean varnish from gas tank with Sea Foam [SOLVED]

Can I use Sea Foam Motor Treatment to clean the varnish from a scooter gas tank that sat three years? The tank is removed.

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Jim D.
Jim D.
1 year ago

Hi Joe,

Yes, you can use a mixture of Sea Foam Motor Treatment and fresh fuel at a ratio of 50/50. Pour the mixture in the tank, and let it sit for 24-48 hours. Make sure it’s filled above the “contamination line.” Periodically, move the fuel tank around to get the mixture of Sea Foam and gas moving. It is best if you can get a little heat inside the tank, so leave it outside as long as you can in direct sunlight if that’s an option. Sea Foam works better at higher temperatures. Dispose of the fuel/Sea Foam mix once finished.

After that, run a cleaning dose of Sea Foam Motor Treatment to a small tank of fuel (full can in 2-3 gallons of fuel, or the equivalent ratio), and drive till almost empty before refilling. The high concentration will help clean out any varnish in the rest of the fuel system.

Hope that helps!