Should I treat old boat fuel or start with fresh fuel and Marine PRO [SOLVED]

I have about 50 gallons of non-ethanol gas that was stored for several months with no treatment. Can I treat it now with a Sea Foam treatment, or is it better to start from scratch with fresh gas in the boat and start using Sea Foam Marine PRO? (Current gas is yellowish with deposits).

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Jim D.
Jim D.
8 months ago

Since the fuel has turned yellow with deposits, it’s better to start from scratch with fresh fuel in the boat. For the first tank, add a full can of Marine PRO to a low tank of fuel. After that, add 1 ounce of Marine PRO per gallon of fuel.