Can I use Sea Foam in the crank case of my lawn tractor? [SOLVED]

Thanks for the question, Lester! Yes, you can add Sea Foam to the oil of a small engine like a lawn tractor. Add 1 ounce of Sea Foam per quart of oil. We recommend adding it shortly before an oil change. Just make sure to run the tractor for a few hours with the Sea Foam in it before you change the oil. That gives the Sea Foam a chance to circulate and clean.