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Your cart is empty.Revitalize and optimize your engine's performance with Gumout Multi-System Tune-Up, the ultimate solution for combating the inevitable wear and tear all engines face over time. Whether you drive a gasoline, diesel, or ethanol-powered vehicle—from high mileage cars to hardworking lawn mowers—our advanced formula tackles carbon deposits that hinder performance and reduce fuel efficiency. This high mileage fuel system cleaner effectively cleans GDI/direct and port/indirect fuel injectors, carburetors, intake valves, piston tops, cylinder heads, and the crankcase, ensuring every component operates at peak efficiency. Engineered with premium P.E.A. (polyetheramine), it not only cleans but conditions gasoline, ethanol blends, and diesel fuels, combating corrosion from water and ethanol while stabilizing fuel and oil to prevent future deterioration. Gumout® Multi-System Tune-Up is more than just a fuel injection cleaner or gas tank cleaner; it's a comprehensive engine treatment that enhances performance, maximizes fuel economy, reduces emissions, and extends engine life. Perfect for high mileage fuel system cleaner, fuel stabilizer gasoline, and fuel injection cleaner needs, it also serves as a fuel stabilizer for generator units and small engine carburetor cleaner. Easy to use, whether added directly to the gas tank, crankcase, or via induction, it's the trusted choice for professionals and enthusiasts alike. Elevate your engine's performance with Gumout Multi-System Tune-Up—because every engine deserves the best care to perform its best.
Ran Sack
Reviewed in the United States on February 27, 2025
I watched a youtube video that suggested this product so thought I'd give it a try. My vehicle was purchased new and just hit 15k miles after about 2 years of Colorado driving. Noticed it was running kind of rough and there was a lag when accelerating. I assumed it was time for a scheduled maintenance but none is listed. So, tried this product and I'm truly amazed at the difference. I combined the treatment with a full tank of premium fuel - about 16 gallons - and didn't notice immediate results. But, after driving around for a few days including a highway round trip of about 150 miles, it's ridiculous how much better my vehicle runs. Smoother, quicker acceleration, and I think gas mileage has improved but I won't know until I fill the tank again in a few days. No brainer that I will make this product part of my maintenance every 5k miles
dominic t teh
Reviewed in the United States on February 22, 2025
Engine runs smoother
eric almeida
Reviewed in Canada on January 29, 2025
Works well does the job
reviewer33
Reviewed in the United States on July 12, 2024
I've used Gumout Multi-System Tune Up for both my cars and small engines in my lawnmower and generator. It seems to clean the system and improve performance very quickly. I tend to use it every 7k to 10k miles in my car and with every tank in my lawnmower and generator.I especially like the fact that it is supposed to be a fuel stabilizer as well as clean the system. This has been important to me for my lawnmower and generator. Prior to using any sort of additive in my lawnmower, I had left fuel in the tank over one winter and the next Spring it would not start very easy and would run rough. I added a significant amount of Gumout to the gas and ran it about 5 minutes, though took a while to start was still running rough. Tried it again the next day and the mower worked like new. I can only imagine that the Gumout got worked into the fuel system the day before and it cleaned out the gummed up ethanol overnight. Now I add about 1 oz of Gumout to each gallon of gas for my lawnmower. Since then, it runs perfect with no problems, even when leaving gas in the tank over Winter.For my car, I can definitely notice improvement in performance after using about a quarter tank of treated gas. I am not sure about the level of PEA in the mixture, but it seems to be enough for a mid-size car with an 18 gallon tank. For large vehicles, maybe two can would be necessary.The only thing I don't like about this product is the can. I know it is modeled after the Seafoam container, but it is difficult to use when adding to a car gas tank. Other Gumout products have long neck designs that make adding to the tank easily, it would be nice if this product had that design too.
gene
Reviewed in the United States on December 25, 2024
Works good,so far, good price
Placeholder
Reviewed in India on December 20, 2024
Bought Gumout for my 2007 Maruti Suzuki WagonR, and it's impressive! After using it, the engine feels smoother, and mileage has noticeably improved. Easy to use and worth every penny. Highly recommended for maintaining fuel system health. Will definitely buy again. Great product for keeping my beloved WagonR running strong!
D3169
Reviewed in the United States on November 10, 2024
Love the new functionality of the new can it has great cleaning ability even though it’s made to help start cars. Great value for the money and it’s still the same size. I have had no leakage from the can and it’s easy to use.
ulderico merilles
Reviewed in the United Arab Emirates on October 9, 2024
Purchase twice for my 2013 Lancer Fortis, I can say that the product is so effective that you can immediately feel the difference after awhile.
Alwaleed
Reviewed in Saudi Arabia on January 2, 2024
انصح فيه ولكن سعره مرتفع بعض الشي
S2k4ever
Reviewed in the United States on July 13, 2023
I recently had the engine and transmission mounts replaced in my 2006 direct injected Audi 2.0 turbo car at 218K due to idle vibrations and decided to tackle the gas fumes I had been experiencing over the past 5 years in my car while backing up. I tried Liqui Moly Jectron for a week then I came across the DI Jectron version for direct injection engines on the Liqui Moly website I tried the next week. The gas fumes changed from a gas smell to like a sweeter smell with the DI Jectron but on the last 1/4 of tank I got a P0171 code while having to slow down to about 45 mph on a mountain in traffic and then accelerating back up to speed slowly. After clearing the code and adding the Gumout Tune-Up the next morning I tried to duplicate the issue in the same area for two days on the way back from work and the code did not come back. I also noticed less friction in the fuel system with the Gumout product while slowing down and accelerating so I may have has some gunk in the system after the car mostly sat for 2 years during COVID with the ethanol fuel we have in California. The Gumout Tune-Up also cleared up the gas fumes as I am not smelling it anymore and the car is running almost like new. I will continue to use the CRC intake valve and turbo cleaner spray or the Gumout Tune-Up to clean the valves before oil changes and the Gumout Tune-Up every 2 months for the fuel system as I believe these high pressure pump systems need some kind of lubricant in them with the ethanol in the fuel. I may also use 4 ounces of Marvel Mystery oil in the tank again on regular fill ups like I used before COVID to keep the system lubricated. Gumout makes a great product at a great price.***Update the gas fume smell came back on the 3rd day of Gumout, I am going back to the Liqui Moly DIJectron.****
Henry McMullin
Reviewed in Canada on May 24, 2023
I have nothing bad to say about the product itself. Worked as advertised. I gave it a 1 star due to the price of $31.48 and this includes a supposed price drop of 11%. I later found it at the local Walmart and Canadian Tire for $13.48. Again, I wish I would have done some research first.
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