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Fuel Injector Cleaner – 32 Oz.

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Rislone Fuel Injector Cleaner (32 oz. Economy Bottle)

Rislone Fuel Injector Cleaner — the best all-around fuel additive to use with every tank of fuel. From the outset, we engineered it to be far better than your average fuel additive. And we succeeded.

This complete fuel injector tune-up helps eliminate noisy injectors and fuel pumps, rough idle, hard starting and hesitation. Its high-performance additives increase power, performance, mileage and help save gas. You can use this product with all gasoline, ULSD diesel and E85 Flex-Fuel engines, as well as all unleaded, oxygenated, reformulated and biofuels.

What it's for:
  • Fuel
What it does:
  • Lubricates
  • Preventative Maintenance
  • Performance
  • Stops Noise
  • Cleans
  • Maximizes Power and Mileage
  • Contains Upper Cylinder Lubricant
  • Cleans Fuel Injectors
  • Use on Gasoline and Diesel Engines
  • What does Rislone Fuel Injector Cleaner do?

    With continued use, it reduces carbon build-up which causes pre-ignition, power loss, burned valves and broken rings. It also cleans injectors to reduce loss of fuel economy, hesitation, pinging (spark knock), and helps restore performance.

  • How does Rislone Fuel Injector Cleaner work?

    This product contains a unique blend of additives that clean & lubricate the entire fuel system, including fuel tanks, lines injectors, and even carburetors on older vehicles.

  • How can this reduce a noisy fuel system?

    The UCL (Upper Cylinder Lubricant) additive lubricates the fuel pump, injectors and upper cylinder to reduce friction & wear, reducing noise.

  • How much will my fuel mileage improve?

    This varies depending on the age of the vehicle, the quality of the fuel used, and how dirty the system is. It is normal for larger increases in MPG on the first dosage and then it will usually taper off and flatten out from the second dosage on. For best results use with every tank of fuel.

  • Can this replace the lubricant in the ULSD Ultra Low Sulfur Diesel Fuel?

    Yes, Rislone Fuel Injector Cleaner with Conditioner & Treatment is an excellent lubricant and will replace the lost additives in the new reformulated diesel fuel.

  • Will this harm the oxygen sensors or plug the catalytic converter?

    No, this will not harm your engine or any emissions components including catalytic converters, oxygen sensors, or the EGR valve.

  • How much do I use?

    P/N 4732 / 32 ounce bottle – One bottle is concentrated to treat 100 gallons of gasoline or diesel fuel. For smaller & larger tanks, including bulk; add approximately 3 ounces for every 10 gallons of fuel.

  • Can I use in E-85 ethanol in my flex-fuel vehicle?

    Yes, Rislone Fuel Injector Cleaner with Conditioner & Treatment works with the E-85 and will lubricate the fuel system reducing the negative effects that ethanol has on the system.

Discover the Best Fuel Injector Cleaner You Can Buy

Clean fuel injectors are critical for the smooth and efficient operation of your vehicle. In day-to-day use, we don’t think much about our injectors, but they’re high-precision components that occasionally need a little attention, even with modern gasolines. Due to varying fuel quality and cleanliness, injectors can get dirty or partially obstructed. And because of the extremely small openings and high operating pressures of modern fuel injectors, even a small amount of dirt or contamination can cause problems.

If you’ve ever seen a quote for injector service, you know just how expensive it is. Injector service for gasoline or diesel engines requires training and specialized tools, which in turn means big bills. Before you take this step, give our Rislone Fuel Injector Cleaner a try. In most cases, one application is all it takes to clean your injectors and get your engine running like clockwork again.

What makes our fuel injector cleaner the best? We’ve created a formulation that combines powerful cleaning agents with a conditioning component that restores the power and efficiency of your engine quickly and for the long term:

  • Cleaning: With continued use, this specialized formula reduces carbon build-up which causes pre-ignition, power loss, burned valves and broken rings. It also cleans injectors to reduce loss of fuel economy, hesitation, pinging (spark knock), and helps restore performance.
  • Conditioning: The second step is conditioning your injectors and fuel for optimal flow and cleanliness. You’ll have more power under acceleration, a more stable idle and improved fuel efficiency. This is because your fuel pump doesn’t have to work as hard to deliver the fuel and it can meter out the exact amount of fuel called for by your engine’s computer. This is why we’ve added an upper cylinder lubricant (UCL) to this formula to help with ongoing conditioning.

Even if you don’t detect a problem with your fuel injectors, it’s worth giving them a cleaning as part of general maintenance. Remove the beginnings of trapped dirt and contamination before it has a chance to accumulate and cause a problem. It only takes a minute to

find your local Rislone retailer using our online locator


We’ve become a leading automotive chemical supplier and are thrilled to have you discover the performance, effectiveness and value of our fuel injector cleaner and conditioner. Simply pick up a bottle, follow our easy installation process and give your car the boost it needs. You’ll be impressed by the results. Remember: your car is what it eats. Make it Rislone.

Part Number: 4732
Dosage: One bottle treats 100 gallons of gasoline or diesel fuel.
Size: 32 fl oz. (472 mL)

Leave a Review

  • “Flat out the best fuel injector cleaner I've ever tried. Use in my '11 F150 and older '87 Mustang 5.0 fox body. I wasn't familiar with Rislone until it was recommended to me, and it's awesome. Thanks for a great product that works as advertised.”

    Adam C. - Madison, WI
  • “I have used and compared to many many competitors. Absolutely amazing! Quick working, very noticeable improvements, crisp precise firing that eliminates much vibration. Some competitors gouge you for price and do not work as well. This is a gift in price for what it will do for your engine.

    With our shitty gasoline today (10% alcohol weakening the power of detonation and its corrosive action) the protection of the upper cylinder lubricant is critically important to safegaurd the mechanical efficiency of delivery. Without it, effectively the correct computer demands are "ignored" and you will get inappropriate low performance. This concentrate is the very best deal i know of for basic, necessary, continuous, timely preventative maintenance and is required in every tank of gas for constant top performance, gas mileage, vibration elimination, proper firing and power.

    All things considered your rings may well be first to go and this product will cut the friction and eliminate unnecessary heat and wear. Another inferior product claims a 67% increase in ring life....if true this product should do a much BETTER job! If you need to keep your car "forever" you definitely need this product. First time I tried this product I was shocked how well it worked right out of the gate! Unbelievably "GREAT stuff" at any price!”

    William E. (Mechanic, Machinist, US Veteran) - Drexel Hill, PA
  • “Great product, I like it. Rislone is all I buy.”

    Mike D. - Manhattan, IL
  • “I found that I got better mileage with lower grade fuel while using this product.”

    G. Smith - Upstate New York