104+ Performance Max Octane Boost & Lead Substitute — 12 oz Concentrate, Boosts Octane & Cleans Fuel System

104+ Performance Max Octane Boost & Lead Substitute raises fuel octane, helps stop knock, and provides a lead replacement for older engines.

If your engine hesitates, pings, or won’t accept lower-grade fuel without performance loss, this concentrated additive is formulated to help. 104+ Performance Max combines high-octane boosting chemistry with deposit-cleaning agents and a lead-substitute formula. It’s designed for modern and legacy gasoline engines that benefit from higher octane numbers and cleaner injectors, carburetors and valve seats. The concentrated bottle makes treating a single tank straightforward and economical.

How does this product reduce engine knock and improve throttle response?

The formula increases effective octane in your fuel, which raises the resistance to pre-ignition events that cause knock and ping. Reducing those unwanted detonations smooths combustion and can restore crisp throttle behavior. While results vary with engine type and fuel quality, many users notice less hesitation under load.

• Boosts octane to resist pre-ignition and detonation
• Stabilizes combustion for crisper throttle response
• Useful for high-compression, turbocharged, or older engines

What cleaning benefits does it deliver for the fuel system?

Alongside octane enhancement, the product contains detergents to dissolve and prevent common fuel system deposits. Cleaning builds up on intake valves, injectors and port areas can cause rough idle, poor spray patterns and lower mpg; this additive addresses those issues over several fills. Regular use helps maintain efficient fuel delivery but is not a replacement for professional service when severe deposits exist.

• Detergent package targets injectors, valves and intake passages
• Helps restore fuel spray and combustion efficiency
• Promotes better fuel economy when used as directed

Can I use this as a lead substitute for older engines needing valve-seat lubrication?

Yes — the proprietary lead-substitute components are included to provide protective lubrication where historic leaded fuels once did. That makes it a practical option if you operate classic cars, lawn equipment, or any engine specified to require lead for valve-seat protection. Follow recommended dosing and service intervals to maintain protection without overuse.

• Contains additives intended to mimic lead’s valve-seat protection
• Suitable for classic and vintage gasoline engines with valve-seat concerns
• Apply at manufacturer-recommended rates for ongoing protection

How do I use the bottle and what are the packaging details?

The product comes in a single concentrated container sized for straightforward tank treatment. Add the measured dose directly to the fuel tank before filling, then run the engine normally so the product disperses. Packaging is compact and labeled with usage directions for common fuel capacities.

• Package dimensions: 9.906 cm (L) x 6.096 cm (W) x 9.906 cm (H)
• Product type: Auto accessory; package quantity: 1
• Made in the United States with concentrated dosing for multiple tank sizes

Who is this for? 104+ Performance Max Octane Boost & Lead Substitute is aimed at drivers who want improved combustion stability and fuel-system cleanliness — including owners of performance cars, turbocharged vehicles, classic cars needing valve-seat protection, and anyone struggling with low-octane-related knock. It’s not a cure-all for mechanical faults; instead, it’s a maintenance and performance supplement intended to complement proper tuning, quality fuel, and routine servicing. Use it as part of a regular maintenance routine to help preserve engine performance and responsiveness when higher octane or cleaner fuel delivery is needed.