7901 Berryman Fuel Injector Cleaner

Berryman FUEL INJECTOR CLEANER & UPPER CYLINDER LUBRICANT CONCENTRATE has been professionally formulated and is EPA-registered to perform the following functions in all 2-stroke and 4-stroke gasoline and diesel engines, including turbos: One-tank cleanup of all types of gasoline fuel injectors, including those in modern direct injection (GDI) engines, One-tank cleanup of all types of diesel fuel injectors, including those in high-pressure common rail diesel engines; Cleans combustion chambers, intake valves, and carburetors in gasoline engines; Provides upper cylinder lubrication for improved fuel economy; Restores lubricity in all low-sulfur diesel fuels, including UISD, to maximize fuel pump and fuel injector life; Dramatically lowers diesel pour point and reduces fuel filter plugging for enhanced cold-weather operability; Restores lost power and performance; Reduces fuel system corrosion and harmful emissions; Treats 400 gallons of gasoline or diesel fuel; Safe on catalytic converters, oxygen sensors, and diesel DEF & selective catalytic reduction (SCR) systems; Effective in all grades of gasoline, petrodiesel fuels, and biodiesel fuels.


  • atv utv
  • car
  • construction
  • dirtbike
  • farmequipment
  • generator
  • jetski
  • largeboat
  • motorhome
  • motorcycle
  • racecar
  • ridingmower
  • smallboat
  • snowmobile
  • tractortrailer
  • truck

7901 - Net 1 U.S. Gallon (3.78 L)

Part #7901

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I have a 2006 Nissan Murano 3.5 engine with 213000.0 miles that had a rough idle so I tried two other products and notice little difference, I remembered this product from many years ago, purchased 2 cans and added both cans to a full tank gas, it has a 19 gallon tank. After driving the first 100 miles I notice car idling very good and it had a lot more power. I was so impressed the performance, I also added 2 cans to my 2009 Chevy Silverado 5.3 with a 25 gallon tank and 132000.0 miles on that engine and gotten the same results. I can say there is a increase on the car from 18 mpg to 20 mpg on the interstate and my truck also had 2 gallon gain also. I’m very impressed with this product, So I wanted to share this with my family and friends…PS..MLS is a believer…it works… 1-13-21

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I was looking for a fuel injector cleaner to treat a rough idle on my 2010 GMC Sierra. There was 30 products to choose from at my auto parts store. I decided to get Berryman’s because it was the only one in a metal can. I figured if it needs a metal can to contain it, it must be strong. I bought 2 cans. The first can straightened out the problem. I recommend to everyone and everyone has called me back to say thank you. I had a neighbor who did not drain his gas in his lawnmower for the winter. In the spring, he started it up and it was surging and would not rev up. I put about 2 ounces in the tank and told him to just let it idle for a while. Within a half hour, it stopped surging and ran like a champ. I now treat my lawnmowers with it. At the end of the season I put 2 ounces in the tanks and let them run until they run out of fuel. In the spring they start with one pull. I just noticed that my truck was getting 18mpg on a route that I take twice a week. I just put a can in and ran the route and got 19.5. With an increase of a 1 and a half mpg, X 100 miles, the stuff pays for itself. I now use it to clean throttle plates with a toothbrush. I love this stuff.

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Used it in my mothers 2005 Nissan Altima, without it car misses and has P0301 truble code, started using an miss went away and check engine light went off.

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I have a 79 Suzuki GS850g. Started to lose power while running and stalling out. Was going to get a carb rebuild, but tried the Sea stuff to no avail. Decided to try this product. Used 15oz in about 3 gallons of gas. Bike was running smoothly within 1/2 an hour. Would 100% recommend and will continue to use.

berryman b12 fuel system cleaner


My grandson added a couple of ounces of B-12 to his 1997 Sea Doo that was stalling and hesitating. Amazing results in only about 5 minutes of run time on the water. I’ve never seen anything work so well; so fast.

General compliance disclosure: This guide is provided to assist our customers in determining product compliance with state VOC regulations. Please note that individual states may amend their regulations at any time and that additional states may also adopt regulations in the future. Although Berryman will make a good faith effort to keep this guide updated, please be aware that this information is provided as a courtesy and without guarantee. It is ultimately the user’s responsibility to confirm the appropriateness of a finished product for a given application.

VOC Compliant in all 50 states