Red Line Fuel Protection Bundle | SI-1 Complete Fuel System Cleaner & Lead Substitute | Fuel Injector Cleaner, Valve Protection & Gas Treatment - 2 Pack

Maintain cleaner fuel systems and protect older engines with this Red Line Fuel Protection Bundle featuring SI-1 Complete Fuel System Cleaner and Lead Substitute. Designed for classic vehicles, performance engines, and routine maintenance, this bundle helps improve combustion efficiency while supporting valve seat protection in engines originally designed for leaded fuel. The SI-1 Complete Fuel System Cleaner removes harmful deposits from fuel injectors, intake valves, and combustion chambers to improve throttle response, fuel efficiency, and engine smoothness. The Lead Substitute helps reduce valve seat wear and supports reliable engine operation in older gasoline engines. Ideal for classic cars, muscle cars, motorcycles, trucks, and performance vehicles, this bundle helps restore performance, improve drivability, and support long-term engine reliability.

• COMPLETE FUEL SYSTEM PROTECTION: Includes Red Line SI-1 Complete Fuel System Cleaner and Lead Substitute for cleaner combustion and added valve seat protection - 2 of each.
• CLEANS INJECTORS & COMBUSTION CHAMBERS: SI-1 removes carbon, gum, and varnish from fuel injectors, intake valves, and combustion chambers for smoother engine performance.
• PROTECTS OLDER ENGINES: Lead Substitute helps protect valve seats in classic and older engines designed for leaded gasoline.
• IMPROVES PERFORMANCE & EFFICIENCY: Helps restore throttle response, reduce hesitation, improve fuel economy, and maintain cleaner fuel systems.
• IDEAL FOR CLASSIC & PERFORMANCE VEHICLES: Perfect for classic cars, muscle cars, hot rods, motorcycles, trucks, and other gasoline-powered engines requiring fuel treatment and valve protection.