Manufacturer and Distributor of Filterless Fuel Purification Systems Including the Universal Fuel Purifier, Portable Tank Cleaning Unit, and Automatic Fuel Recirculating System. The absolute best fuel purifier at removing water and dirt from fuel. San Dimas, California

See how my company can help you cut up to 25% off of your diesel fuel cost across the board. The Rentar Fuel Catalyst works on marine engines as well as stationary machinery like your diesel generators. In addition to reducing fuel costs, the Rentar Fuel Catalyst can also reduce wear and tear on the engines and boilers to which it's attached. The Rentar Fuel Catalyst is placed on the fuel lines of diesel engines in trucks, ships, trains, off road vehicles, other diesel burning engine applications and boiler/furnaces. As fuel passes through the Rentar fuel catalyst – a unique, cylindrical device using precisely manufactured combinations of rare earth elements and refined metals – reactions are triggered that allow the fuel to burn more efficiently. Boynton Beach, Florida

Royal Purple manufactures high performance lubricants for most automotive, industrial, marine, motorcycle and racing applications. Porter, Texas

Inboard or outboard, jet or stern drive, injected or carburetor, 2 or 4-stroke... Sea Foam products can be used safely and effectively in all marine makes and engine types. Whether gas or diesel, Sea Foam products work to clean and dissolve gum & varnish residues, recover lost engine power, stabilize fuel, lubricate upper cylinders, and protect marine fuel systems and equipment from wear and corrosion. Eden Prairie, Minnesota

World's best filter. Separ Filters remove 99.9% of the free water and solid contaminants found in diesel fuel. A five-stage filtration process and compact design make them the ideal choice for industrial and marine applications. Fort Lauderdale, Florida

Soltron® is an organic based fuel enhancing agent which has been developed over many years of research by combining biotechnology and enzymes. Soltron® helps to stabilize fuel, restricts the separation and oxidation process and limits fuel degradation. SOLTRON’S all-natural enzymes purify fuel and improve combustion. With improved combustion, soot and toxic gases are reduced, abrasive carbon deposits are eliminated, and the knocking that can wear out engines prematurely is eliminated. Fuel economy and performance are also improved. SOLTRON® reduces harmful fuel contaminants that lower fuel lubricity and plug filters, including water, rust , sludge, and gums, protecting fuel pumps and fuel injectors from excessive wear and high maintenance costs. San Pedro, California

Star Tron is a revolutionary multifunctional fuel treatment based on naturally-occurring enzymes. Eliminates & Prevents Ethanol Fuel Problems, Stabilizes Gas & Diesel Fuels, Disperses Bacteria & Algae, Removes Carbon Build-Up, Eliminates Black Soot and Exhaust Stains, Increases Fuel Economy. Star brite Corporation. Fort Lauderdale, Florida

Technol Fuel Conditioners incorporate cutting edge technology based on three decades of research and development. Fuel conditioners, lubricants and detergents

ValvTect manufactures and markets gasoline, diesel fuel, and heating oil additives that are formulated to improve fuel quality, improve engine performance, and extend engine life. Northbrook, Ilinois

Home of the Walker AIRSEP closed crankcase system for diesel engines. Our FUELSEP and ALGAESEP products add quality, value, and emissions reduction to any diesel powered boat, vehicle or facility. The FUELSEP is a "no-maintenance" fuel treatment device that improves the combustion of diesel fuel to burn more completely. The ALGAESEP is a Dynamic Fuel/Water separator that is self contained and designed to be bulkhead mounted. Sun Valley, California