Making sure you use only the best fuel injector cleaners on the market today is paramount for the smooth and affordable operation of your vehicles.

Whether you own an older model vehicle that is showing signs of bad fuel mileage and performance issues or a brand new machine that you simply want to keep in pristine condition, fuel injector cleaning is an easy solution.To help you take care of your favourite motor equipment, we have put together this all-comprehensive review and shopping guide for all your fuel system cleaning needs.

Discover the best fuel injector cleaners, cleaning kits, fuel injector cleaning machines, and fuel additives by reading our reviews; you can even learn how clean fuel injectors yourself by using our guides!

Let’s get started!


What are the Best Fuel Injector Cleaners in 2020?


#1 – Lucas Fuel Treatment

If I had to summarize this Lucas Fuel Treatment review in a single sentence, it would be this:

This stuff just doesn’t mess around.

Arguably one of the best products on the market, this Lucas Oil upper cylinder lubricant works wonders with your fuel injection system.

The great people at Lucas Oil have produced a really good product here. It is extremely versatile and suitable for just about any engine out there, perfect for easy to perform, time-saving maintenance. When you look at this product a little closer, it’s easy to see why it’s so good.

While there might be products out there that perform specific cleaning tasks a tad bit better, the Lucas Fuel Treatment presents an amazing checklist of features:



  • Works with gasoline and diesel enginesCheck
  • Takes it a step further and is suitable for Non-Road, Locomotive & Marine Diesel enginesCheck
  • Use it with both carbureted and fuel injected engines – Check
  • Suitable for use with leaded gasoline – Check
  • Improves gasoline octane rating – Check
  • Increases Power & Fuel Mileage – Check
  • Neutralizes low sulfur fuel problems – Check
  • Lowers Exhaust Emissions – Check
  • Cleans and Lubricates the Carburetor & Injectors – Check
  • Increases the life of pumps and injectors – Check
  • Incredible value per dollar – Check



#2 – Berryman B-12 Chemtool 

The Berryman B-12 Chemtool is a product line that has a very long and proud history. Developed in the 1950’s, it quickly became one of the industry’s leading cleaning solvents.

The Berryman B-12 Chemtool Carburetor/Fuel Treatment and Injector Cleaner is a state of the art product that uses the Berryman exclusive HEST or “High Energy Solvent Technology”.

This technology is designed to pack a real punch when it comes to cleaning gasoline fueled motor parts; none of those weak mineral spirits or kerosene that many other products use.

Unfortunately, due to the strong nature of this solvent, this B-12 product is unsuitable for use in Diesel Engines and can degrade their performance.

If you have a vehicle or a machine that runs on gasoline, opting for this fuel injector cleaner is a good idea, no matter what your cleaning needs. Simply check out these features:

  • Suitable for just about any type of gasoline powered machine (motorcycles, cars, trucks, boats, yard and industrial machines)Check
  • Works with both carbureted and fuel injected engines – Check
  • Berryman exclusive, HEST powered super strong solvent – Check
  • Quickly disperses moisture and dissolves gum, varnish, and other fuel residues – Check
  • Helps clean the whole fuel system – fuel tank, fuel lines, fuel injectors, valves, rings and pistons – Check
  • Increases spark plug and injector life – Check
  • Catalytic converter and oxygen sensor-safe – Check
  • Great value per dollar – Check
  • Suitable for diesel engines – No



#3 – Sea Foam Motor Treatment and Tune-up

Sea Foam fuel injector cleaner products are probably one of the most well known in the whole industry. Having been around for more than 70 years; The Sea Foam company has had plenty of time to refine their products to the highest standard imaginable.

The Sea Foam Motor Tune Up is an extremely versatile liquid. It’s a 100% petroleum based blend; performing the job of a fuel injector cleaner, lubricant, stabilizer and moisture controller.

The Sea Foam Motor Treatment is a common sight in repair shops and garages across the country and for good reason. It’s both affordable and versatile; you can use it on your gasoline or diesel engines and it’s suitable for not only cleaning tasks but also for fuel treatment as it helps with lubricating the engines and protecting them from wear and tear.

The list of features is nothing short of amazing:

  • Suitable for gasoline and diesel enginesCheck
  • Can be used with carbureted and fuel injected engines – Check
  • Suitable for just about any type of machine engine maintenance from cars to leafblowers – Check
  • Not just a fuel additive, but also suitable for use in oil crankcases – Check
  • Cleans injectors, passageways, intake valves and pistons – Check
  • Performs as a de-icer and anti-gel – Check
  • Controls engine moisture and is anti-corrosive – Check
  • Stabilizes fuel for up to 2 years – Check
  • Great value per dollar – Check




Best Fuel Injector Cleaners Infographic:


Best Fuel Injector cleaners - an infographic

Click to Enlarge


Discover our in-depth reviews concerning various products HERE.

Whether it’s liquid cleaners or cleaning kits that you’re interested in, we’ve got you covered.


Fuel Injector Cleaner Overview and FAQ


Why is it important to clean fuel injectors?

Fuel injectors have the extremely important job of spraying just the right amount of fuel into your vehicle’s or motor equipment’s engine. If for some reason the injectors are unable to do their job properly, your engine may start to stutter and due to inefficient fuel use, also suffer from bad fuel mileage.

While it can take some time for the fuel injectors to get dirty enough to cause problems, it makes no sense to even wait for the problems to arise.

The fuels we put in our vehicles are far from pure. Repeatedly running and shutting down our engines (common when driving in a city) causes a heat soak effect. The fuel that is sprayed through the injectors as the engine is running, will stop flowing when we turn off the motor. However, some fuel is always left behind in the injector nozzles and the injectors themselves. While most of this fuel residue will slowly evaporate, some substances will always be left behind.

fuel injector cleaner

That’s one dirty injector…

Over time, the residue in the fuel that doesn’t evaporate and isn’t flushed away with subsequent fuel flow, will be baked and turned into a hard varnish that initiates deposit formation. Those deposits end up clogging the injectors nozzles as-well as the injectors themselves, and cause the engine to no longer get the exact required air/fuel mixture. And that’s when the trouble starts.

Don’t wait until your vehicle is begging for a tune-up. Extremely clogged up fuel injectors may be beyond even the best cleaning liquids and will either require you to get your hands dirty, by manually cleaning or exchanging the injectors, or force you to empty your wallet at the repair shop.

Invest a little in regular maintenance using premium fuel injector cleaners as-well as premium fuel in general, and you’ll end up saving a lot of money and effort in the long run. You can be sure that your vehicle will thank you!

What makes a fuel injector cleaner great?

While the cleaning products technically only have to do one thing – clean the injectors, the truly great products take it a step further. Premium cleaners are designed to mix with the fuel and aside from cleaning the injectors, they also clean the intake valves and the combustion chambers from carbon deposits.

The best fuel injector cleaners are not only effective at breaking up even the most hardened deposits clogging your engine, they will also improve combustion power, help increase fuel mileage and lower harmful emissions, while also being cost effective.

After-all, if the cleaner costs too much, regular use might be no cheaper than visits to the mechanic.

The best product lines also make sure to offer a wide variety of different container sizes, not just for the cost effectiveness, but for ease of use as-well. After all, you don’t want to purchase a gallon of cleaner for a lawn mower engine, nor do you want to maintain your entire line of farm equipment with 5oz. bottles. In addition, the best brands are sure to also have products for diesel engines, so no engines goes without help.


How do you use fuel injector cleaners?

Cleaning liquids are generally very easy to use. Depending on the product, you simply have to add some into your gas tank. Usually this is done by running the gas tank nearly empty and then filling up and adding just the right amount of cleaner to create the proper mixture. Though in some cases, the cleaner is added first and then the tank is filled – make sure to study the product labels as some liquids are designed to only work in one way or another.

fuel injector cleaner

Simply pour some into the gas tank and you’re all set

Depending on the condition of the engine and the product, you may then opt for a more aggressive mixture more often, to help clean up clogged injectors, or a more maintenance like approach, adding the cleaner as a part of a regular maintenance cycle. There’s no doubt that it’s always best to prevent the problem in the first place with regular maintenance.

The specific amounts of cleaner you have to add will depend on the product; the information is usually found on the labels. Most cleaners have a very large safety margin and won’t damage your engine if you use too much; however, some do. Again,

make sure to study the informational labels on the product to avoid causing harm to the engine parts.

Before purchasing and using a cleaner, make sure to also familiarize yourself with the details of your vehicle. Older model vehicles made before the 1990’s may use a carburetor instead of fuel injection and will not make full use of the cleaner. Other vehicles use diesel engines that operate on a slightly different fuel injection principle and may need different, more specific cleaners or a different maintenance schedule all-together. In general, diesel engines have injectors that stay clean for longer; though regular maintenance is still a good idea. If you own a diesel engine, check out our list of the best diesel injector cleaners!

Make sure to purchase the most suitable product for your vehicle to get the greatest benefit! And don’t forget to use our handy fuel consumption calculator to check your mileage and see the improvements!