Can Sea Foam Marine Pro and Stabil Red Storage be used together in the same tank of a 4-stroke outboard? [SOLVED]

Thanks for the question!

Yes, you can use Marine PRO and STA-BIL Storage together in the same tank. The two products are compatible and won’t interfere with each other.

That said, Marine PRO will protect the fuel from degrading and preserve ignition vapor on its own, while also cleaning and lubricating the fuel system.

For storage, I’d recommend adding at least 1 ounce of Marine PRO per gallon of fuel, then run the engine for about 10–15 minutes to make sure the treated fuel is drawn through the entire fuel system before storing the boat.