FITCH Fuel Catalyst Fuel Catalyst by FITCH is an advanced fuel treatment designed to protect stored fuel, boost engine performance, and extend maintenance intervals for gasoline, diesel, and oil-burning equipment. Preserves fuel quality: Stabilizes fuel during storage to prevent degradation and varnish. Power & efficiency: Increases gasoline octane or diesel cetane for improved horsepower and torque. Better fuel economy: Optimizes combustion to reduce fuel consumption and lower operating costs. Lower emissions: Reduces greenhouse gas output and harmful exhaust contaminants. Reduced maintenance: Keeps injectors and combustion chambers cleaner to extend service intervals. Oil burner performance: Enhances efficiency in oil-fired burners. Long-lasting protection: One application treats up to 250,000 miles or 5,000 operating hours. Convenient packaging: Sold two capsules per display card; one capsule treats up to a 10-gallon tank. Ideal for fleets, recreational vehicles, seasonal equipment, and stored vehicles — FITCH Fuel Catalyst delivers measurable performance, economy, and reliability with every application.