Rislone Cat Complete Fuel, Exhaust & Emissions System Cleaner — 1-Pack, Restores Performance & Reduces Deposits

Rislone 4720 Cat Complete is an all-in-one cleaner that targets fuel injectors, combustion chambers, turbo/EGR components, catalytic converters, oxygen sensors and the exhaust system to remove soot, carbon and oily deposits.

Over time combustion byproducts, poor fuel, short trips and harsh conditions allow carbon, soot and oily residues to build across fuel, emissions and exhaust components. Rislone 4720 Cat Complete uses concentrated detergents and heavy-duty solvents to dissolve and flush these deposits so parts can function closer to their original design. Regular use helps maintain efficiency and reduce issues that show up as rough idle, reduced power, poor mileage or check-engine alerts.

How does this product clean both fuel and exhaust systems?

Rislone formulated Cat Complete with multiple active agents that attack organic and inorganic deposits across the entire combustion chain. During normal operation the chemicals react with combustion gases and loosen residues so they can be expelled through the exhaust or burned away, restoring flow and sensor accuracy.

• Detergents remove varnish and gum from injectors and intake passages
• Solvents dissolve soot and carbon in combustion chambers and turbos
• Reactive agents reduce buildup on EGR valves and oxygen sensors
• Safe for catalytic converters and designed to meet EPA compliance criteria

Will it work on my vehicle type or engine?

Yes — Cat Complete is compatible with a wide range of modern and legacy systems. It can be used in gasoline, ethanol-blended and hybrid drivetrains and is safe for common fuel delivery systems, including port and direct injection.

• Compatible with fuel-injected, direct-injected and carbureted engines
• Safe on turbocharged, GTDI, EcoBoost and Ecotec engines
• Formulated for vehicles equipped with oxygen sensors and catalytic converters

How often should I use Rislone Cat Complete and what benefits will I see?

For maintenance, applying Cat Complete approximately every 5,000 miles helps keep fuel and emissions components cleaner and can prevent recurring check-engine lights caused by deposit-related sensor errors. Users typically notice improved idle smoothness, steadier throttle response and better fuel economy when deposits are reduced.

• Maintenance interval: about every 5,000 miles for preventative care
• Reduces emissions-related fault codes and drivability issues
• Can delay or avoid costly fuel-system and emissions repairs

Is it safe to use with my vehicle’s warranty and emissions equipment?

Rislone designed this formula to be safe for vehicles fitted with catalytic converters and oxygen sensors, and it exceeds EPA compliance performance criteria. Because it does not introduce unapproved hardware or harmful additives, it should not void manufacturer warranties when used as directed.

• Specifically formulated to be safe for catalytic converters and O2 sensors
• Meets or exceeds EPA-related performance expectations
• Intended for routine preventive maintenance rather than emergency repairs

Who is this for? Rislone 4720 Cat Complete is aimed at owners who want a single product to address fuel, emissions and exhaust cleaning without equipment changes — commuters who do frequent short drives, vehicles exposed to lower-quality fuel, drivers noticing reduced performance or technicians seeking a trusted cleaner for preventative service. It’s also suited to anyone looking to maintain sensor accuracy, reduce emission-related trouble codes and extend the service life of expensive components through periodic chemical cleaning rather than immediate part replacement.