Sea Foam with 2-stroke gas and oil mix [SOLVED] Asked by Dan H. In South Carolina If I use Sea Foam Motor Treatment on my two-stroke outboard, do I put the oil in the gas, or just the Sea Foam in the gas?
Good question, Dan.
Sea Foam is NOT a replacement for adding oil to the gas in a 2-stroke outboard. Add the oil to the gas as usual. Then add 1-2 oz of Sea Foam Motor Treatment per gallon of fuel.