Gumout Regane High Mileage Fuel System Cleaner, 6 oz — Pack of 6, CarbonClear PEA Formula for Restoring Power & Fuel Economy

Gumout Regane High Mileage Fuel System Cleaner is a concentrated 6 oz formula that removes stubborn upper-cylinder carbon and conditions fuel systems to restore performance and improve fuel economy in vehicles with over 75,000 miles.

If your high-mileage engine shows reduced power, rough idle, poor fuel economy or hesitation, hardened carbon and friction in the upper cylinder are often the cause. Gumout Regane uses CarbonClear technology — a blend of PEA (polyether amine), PIBA and a patented detergent mix — to dissolve deposits other cleaners may miss. This 6 oz bottle (sold here as a convenient pack of six) is designed to be added to a nearly empty fuel tank and used every 3,000 miles for preventative maintenance and restoration.

How does Regane remove carbon and restore performance?

Regane targets the toughest deposits on intake valves, injectors, piston tops and combustion chambers by using PEA combined with PIBA and a third detergent in the CarbonClear formula. The chemistry lifts and dissolves carbon, allowing normal combustion to return and friction to drop. Results are typically visible after one fill-up when used as directed.

• CarbonClear: PEA + PIBA + patented detergent for deeper cleaning
• Removes deposits from injectors, valves, piston crowns, and ports
• Restores throttle response and smoother idle in one tankful

Will this product help fuel economy and reduce wear?

By reducing friction in the upper cylinder and cleaning fuel injectors and combustion surfaces, Regane can help recover lost fuel economy and reduce wear-related performance loss. It conditions fuel to combat ethanol and water-related corrosion, helping protect fuel system components over time. Use at the recommended interval to keep benefits consistent.

• Conditions upper cylinder to reduce friction and wear
• Fights ethanol and water corrosion in the fuel system
• Use every 3,000 miles to maintain cleaner combustion and efficiency

How do I use the 6 oz bottle for best results?

Pour the entire 6 oz bottle into a nearly empty gasoline tank, then fill the tank with up to 21 gallons of gasoline. Running the tank down before refilling maximizes contact time between the cleaner and carbon deposits. For ongoing maintenance, repeat the treatment every 3,000 miles.

• Add entire 6 oz bottle to a nearly empty tank
• Refill with up to 21 gallons of gasoline after adding
• Do not refill again until tank nears empty; repeat every 3,000 miles

Is Regane compatible with my vehicle and safe to use?

Regane is oxygen sensor safe and formulated for use in both naturally aspirated and forced-induction engines, including turbocharged and supercharged vehicles. It’s a universal-fit additive designed to be safe when used as directed and will not void OEM or manufacturer warranties. Always follow vehicle manufacturer recommendations for additives if stated.

• Oxygen sensor safe and safe for turbo/supercharged engines
• Universal fit — does not void OEM/manufacturer’s warranty when used correctly
• One bottle treats up to 21 gallons of gasoline per direction

Who is this for: Gumout Regane High Mileage Fuel System Cleaner is ideal for owners of vehicles with 75,000 miles or more who want to recover lost performance, reduce upper-cylinder friction, and protect the fuel system from ethanol and water-related corrosion. It is suited for enthusiasts maintaining older vehicles, fleet operators seeking consistent efficiency, and everyday drivers who prefer scheduled preventative care. The pack of six 6 oz bottles offers multiple treatments or service intervals for one vehicle or several vehicles in a garage or fleet.