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What it Does

  • CLEANS
    CLEANS

    GDI/direct and port/indirect fuel injectors, intake valves and ports, piston tops, cylinder heads, combustion chamber

  • CONDITIONS
    CONDITIONS

    Fuel to fight ethanol and water corrosion, upper cylinder to reduce friction and wear

  • PREVENTS
    PREVENTS

    Future carbon buildup

Information

Size US Item # CAN Item # SDS Doc
6oz 800001365 800001742 |US
12oz 800001365 800001742 |US
WARNING

This product can expose you to chemicals including Naphthalene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Directions

  • 800001365 - 6oz
    • Add entire bottle to nearly empty gasoline tank, then fill tank with up to 21 gallons of gasoline.
    • For best results, do not refill tank until near empty.
    • Use every 3,000 miles.

    Specially formulated for vehicles over 75,000 miles. Oxygen sensor safe. Safe for use in turbocharged and supercharged vehicles. Will not void OEM/manufacturer’s warranty.

  • 800001365 - 12oz
    • Add entire bottle to nearly empty gasoline tank, ideally at time of oil change.
    • Refill tank with up to 19 gallons of gasoline.
    • For best results, do not refill tank until near empty.
    • Repeat every 3,000 miles.

    The product will not harm catalytic converters or oxygen sensors. Can be used with all unleaded, oxygenated, and reformulated gasolines. Safe to use with other Gumout® fuel additives.

WHAT PEOPLE ARE SAYING

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Gumout
Average rating:  
 14 reviews
byRJ Williams onGumout
VP Operations

This product is really High Quality and works well.

byThomas onGumout
works great

works great in my 2003 monte carlo and my mazda 5

byDan Ward onGumout
Best Injector Cleaner

For over 6,000 miles I battled various mis-fire codes on my '02 Camry. I had finally determined that it must be the fuel injectors. I ordered new injectors and, while I waited, read a review on line that said I should try an injector cleaner. I've used a variety of brands over the years without much success, but decided to give it a shot. I bought a bottle of Regane High Mileage Fuel System Cleaner, still unconvinced that it would work. A quarter of a tank later, my check engine light went off and my car is running smooth. I can't recommend this product highly enough.

byJim in Dallas onGumout
'94 Mercury Grand Marquis

Pleasantly surprised by the effectiveness of this product. Put this in my mother's aging Mercury with 157k on the clock because it developed a light ping during summer months under mild acceleration loads. RxP has been my preferred product to blow out carbon, but it didn't work on this engine. One treatment of Gumout High-Mileage eliminated pinging under most conditions. When it does ping it is much more subdued than before. Very impressive. Five stars.

byCarlos Lopez onGumout
Didn't believe my car could do better

my 99 Honda Civic would only give me 30 city & highway mpg . Now after using gumout regane highmileage I get 37 mpg highway & city.

byChopper onGumout
Better Gas Mileage

I use Gumout Regane pretty much after every Jiffy Lube oil change, it keeps my Jeep running tip top. Unlike paying $100 for a fuel system cleaning by the pros, I just pour this into my tank and it keeps the fuel system clean. I first tried a few years ago when my car was hesitating. What I found was that it clean up the fuel injectors but also improved my gas milage...now its a must.

byjettech onGumout
Best fuel system cleaner

I've been using Regane for years , because it has the best combination of ingredients to get the job done that it takes several other brands combined to do.

byjowi onGumout
Seems to be helpful for overall performance

looking for a quality product that has value,. Hope i found it.

byMFMW onGumout
Works great!

I have used GUMOUT for years, I'm a mechanic of 18yrs and am totally hooked.. Good prices and great results, keep up their good work GUMOUT.

byickyg31 onGumout
There is value in using Humour products

When I use this product it works the way it is suppose to do

MAINTENANCE & PREVENTION

If you have a car, it can be tempting just to ignore any type of maintenance unless something goes wrong. We probably don’t have to tell you that this is a bad idea. However, not everyone agrees on what preventive maintenance is, what you should do and when you should do it. Let’s clear that up, and give you some tips that’ll apply to any vehicle.

LEARN WHY IT'S IMPORTANT

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