Gumout High Mileage Fuel Injector Cleaner 6-Pack — Restores Power & Improves Fuel Economy for 75,000+ Mile Engines

Gumout High Mileage Fuel Injector Cleaner (6-pack) is a concentrated fuel-system treatment engineered to dissolve carbon deposits in engines over 75,000 miles and help restore power, fuel economy, and smoother idling.

Years of driving allow carbon and varnish to form on injectors, intake valves, ports, and in combustion chambers, which can reduce throttle response and increase fuel consumption. This six-pack from Gumout delivers multiple treatments designed specifically for high-mileage vehicles, is safe for turbocharged and supercharged engines, and is formulated to protect oxygen sensors and not void manufacturer warranties.

How does this cleaner improve an older engine's performance?

By breaking up and dissolving carbon buildup on fuel injectors, intake valves, and ports, the formula helps restore consistent fuel spray patterns and combustion. Improved fuel atomization and cleaner air passages support smoother acceleration and more efficient burning of gasoline.

• Targets deposits on injectors, intake valves, and combustion chambers
• Restores fuel flow and throttle response
• Helps reduce rough idle and hesitation
• Formulated for high-mileage engines over 75,000 miles

When and how should I use the Gumout high-mileage treatment?

For best results, add one full bottle to a nearly empty fuel tank before filling it with up to 21 gallons of gasoline. The product is designed to be used every 3,000 miles and you should let the tank run near empty before the next treatment for maximum deposit removal and ongoing protection.

• Add one bottle to nearly empty tank, then fill up to 21 gallons
• Use at recommended 3,000-mile intervals for maintenance
• Do not top off immediately—allow treatment to work through fuel
• Each bottle supplies one full treatment per tank

Is this safe for modern engines, sensors, and forced-induction systems?

Yes. The formula is oxygen-sensor safe and suitable for vehicles with turbochargers and superchargers. It is engineered to clean without harming emission-control systems and is formulated not to void OEM or manufacturer warranties when used as directed.

• Oxygen sensor safe—designed to protect emissions hardware
• Safe for turbocharged and supercharged engines
• Formulated to avoid warranty-voiding ingredients
• Compatible with a wide range of gasoline engines

What specific benefits will I notice after treatment?

Drivers commonly notice improved throttle response, steadier idle, and sometimes a measurable improvement in miles per gallon as injectors and intake passages clear. While individual results vary with vehicle condition, regular use helps prevent new carbon buildup and maintains engine efficiency.

• Smoother idling and reduced hesitation under acceleration
• Potential improvement in fuel economy over time
• Lowered likelihood of deposit-related misfires or rough running
• Ongoing protection against future carbon accumulation

Who is this for: Gumout High Mileage Fuel Injector Cleaner (6-pack) is aimed at owners of vehicles with more than 75,000 miles, fleet managers maintaining older cars, and anyone with turbocharged or supercharged gasoline engines seeking preventive maintenance. It suits drivers who perform regular fuel-system upkeep or those who want to correct symptoms of carbon fouling without mechanical disassembly.