(12 pack) Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 510013
(12 pack) Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 510013
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(12 pack) Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 510013

4.7 stars out of 399 reviews
(4.7)|
399 ratings
(12 pack) Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 51001312 pack Gumout High Mileage Fuel Injector Cleaner Additive 6 oz 51001324 pack Gumout High Mileage Fuel Injector Cleaner Additive 6 oz 510013Gumout High Mileage Fuel Injector Cleaner Additive 6 oz 5100136 pack Gumout High Mileage Fuel Injector Cleaner Additive 6 oz 5100132 pack Gumout High Mileage Fuel Injector Cleaner Additive 6 oz 510013
Pack Size:12 Pack

Key item features

  • Targeted Application: Specifically formulated for engines with over 75,000 miles, this additive effectively removes carbon deposits from fuel injectors, intake valves, and ports.
  • Performance Restoration: Designed to restore engine performance and improve fuel economy by addressing carbon buildup in high-mileage vehicles.
  • Chemical Composition: Utilizes functional amine chemistry as its effective base material for cleaning, ensuring efficient deposit removal.
  • Fuel Compatibility: Compatible exclusively with no-lead gasoline, making it suitable for a wide range of modern vehicles.
  • Safety Assurances: This additive is safe for use with both catalytic converters and oxygen sensors, preventing damage to these critical emission control components.
  • Treatment Capacity: Each 6 oz bottle is capable of treating up to 21 gallons of fuel, providing a substantial treatment per use.
  • Maintenance Interval: Recommended for use every 3,000 miles to maintain engine cleanliness and optimal performance.
  • Lubrication Benefit: Contains upper cylinder lubricants, which help to reduce friction and wear in the upper engine components.
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Current price is $44.1661.3 ¢/fl oz
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  • 12-pack of Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 510013
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4.7 out of 5 stars
stars399 ratings145 reviews
How item rating is calculated
  1. 5 stars79% (317)
  2. 4 stars15% (58)
  3. 3 stars3% (13)
  4. 2 stars1% (2)
  5. 1 star2% (9)

Reviews summary

Pros

  • : Quick application process with easy instructions.
  • : Offers quality at a price that matches its brand reputation.
  • : Improves fuel efficiency over time.
  • : Simply pour into nearly empty gas tank prior to filling up.
  • : Operates quietly and with minimal vibration.
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Showing 1-3 of 145 reviews

Oct 13, 2025
Terry
Top Reviewer
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

A longtime brand you can trust

Gumout has been selling carburetor cleaner products since 1941, long before they began making fuel injector cleaners. It is a brand you can trust. I use the high-mileage fuel injector cleaner because it is specially formulated to reduce higher levels of carbon deposits and wear-related issues. It is safe to use on vehicles that have over 75,000 miles on the engine. The high-mileage formula also includes seal conditioners to maintain the integrity of fuel system seals and prevent leaks. Clean fuel injectors will improve performance for most motorized vehicles, leading to lower cost at the gas pump. Gumout in the 6 oz bottle is affordable and will treat up yo 21 gallons of gas when poured into the tank prior to filling up.

Helpful?16IH8WFSYPDX15593652257
Mar 20, 2026
Walmart customer
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Purring like a kitten

This product is worth every penny. I get into my car and start it. starts right up, still after almost 20 years. I had some hesitation in the past about these types of products but this one really works. I put the spout into the hole, wait for the contents to empty and get in my car. when I push the gas pedal the car immediately responds to what I am wanting it to do. Get this- you wont be disappointed.

Helpful?16IH8WFSYPDX15593652257
Oct 22, 2025
Sharon
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Improved Idling ASAP

I've been battling rough idling and sluggish acceleration on my Ford Escape, so I gave Gum-Out Fuel Injector Cleaner a shot. Poured a bottle into a full tank as directed, and after 200 miles, the difference was night and day—smoother starts, better throttle response, and even a slight MPG bump (up about 2). No weird smells or engine knocks, and it's easy to use with any gas station pump. Affordable fix that outperformed pricier competitors. If your injectors are gunked up, this stuff delivers real results!

Helpful?16IH8WFSYPDX15593652257