Does Seafoam Boost Octane?

Well Seafoam could possibly raise octane, it has alcohol in it, which resists preignition.

Is there an additive to increase octane?

Just like their name suggests, octane boosters are designed to raise a vehicle's octane rating. For most car owners, that means using a bottle of octane booster when refueling their vehicle to give it better performance, fuel economy, and more.

Can you put Sea Foam in a premium gas?

Made from petroleum ingredients, Sea Foam is safe and effective when used in all types of gasoline or diesel fuels and fuel blends. Sea Foam does NOT contain harsh detergent or abrasive chemicals that can harm your engine or fuel system components.