Sea Foam engine treatment works, according to Does It Really Work. Sea Foam is an automobile cleaning treatment that helps eliminate build-up in the engine.
Sea Foam is registered with the Environmental Protection Agency and works by turning gummy substances in the engine into liquid. Cars run more smoothly when the built up gummy material is melted away. Running the product through the car every 5000 miles is the recommended frequency. Most users say that it works quickly, but an engine may have other problems that cannot be solved by this product. Owners should submit their car to a professional tune-up at regular intervals.