Red Line Lead Substitute Fuel Additive, 12 oz — Protects Valve Seats & Cleans Injectors

Red Line 60202 Lead Substitute is a 12-ounce fuel additive formulated to protect valve seats in engines built for leaded gasoline while cleaning carburetor deposits and fuel injectors.

This concentrated formula is designed for race, marine, and off-road applications where older engines require the cushioning effect of lead or where valve seats have not been upgraded for unleaded fuel. Each 12-ounce bottle treats up to 25 gallons of fuel and is safe for catalytic converters, offering a maintenance-minded way to preserve engine components and improve fuel-system cleanliness without altering fuel octane.

How does Red Line 60202 protect valve seats in engines designed for leaded gasoline?

The additive contains compounds that mimic the lubricity once provided by leaded fuel, forming a protective film on valve seats to reduce impact wear. This lowers the chance of valve seat recession in engines that lack hardened seats, helping older or competition engines maintain valve sealing integrity under demanding conditions.

• Forms protective lubricating film on valve seats.
• Reduces impact wear and potential valve seat recession.
• Useful for pre-1970s or non-hardened valve-seat engines in racing and marine use.

Will using this product harm my catalytic converter or oxygen sensors?

Red Line 60202 is formulated to be safe for catalytic converters and oxygen sensors when used as directed. It cleans fuel-system deposits without leaving residues that typically harm emissions equipment, making it appropriate for engines that still rely on catalytic control when used in allowed environments.

• Safe for catalytic converters and O2 sensors per manufacturer formulation.
• Designed to avoid deposit-forming residues in exhaust systems.
• Recommended for racing, marine, and off-road applications where allowed.

How does this additive improve fuel-system cleanliness and performance?

In addition to valve-seat protection, the formula contains detergents that dissolve carburetor varnish and clear injector deposits. Cleaner fuel pathways support steadier fuel flow and more consistent combustion, which can help throttle response and reduce hesitation in high-demand situations.

• Removes carburetor deposits and injector fouling.
• Supports consistent fuel flow and smoother throttle response.
• One 12-ounce bottle treats up to 25 gallons of fuel.

How should I use Red Line 60202 for best results?

Shake the bottle, then add the measured dose to the fuel tank before filling, or follow Red Line dosing instructions for race or marine setups. Use the product per recommended dosing rates—one bottle treats up to 25 gallons—to ensure proper protection and cleaning without overdosing.

• Shake bottle before use; add to fuel tank as instructed.
• Each 12-ounce bottle treats up to 25 gallons of fuel.
• Intended for racing, marine, and off-road use where lead substitutes are permitted.

Who is this for: Red Line 60202 is aimed at owners and technicians of older or performance engines—race cars, marine craft, and off-road machines—that were designed for leaded gasoline or that have not had valve seats upgraded. It’s a practical option for teams and hobbyists seeking to protect valve seats during competition or recreational use while also cleaning carburetors and injectors. It is not intended as a day-to-day consumer street-vehicle additive where local regulations prohibit such use; always follow local laws and manufacturer recommendations.