Updated at: 12-06-2022 - By: Lucas

Your car isn’t just a way to get from A to B. It’s much more than that, and many people treat it like a prized possession.

Proper maintenance is very important if you want your expensive car to run well and last a long time.

This also helps keep your car from needing major repairs, which are not only expensive but also take a few days to fix and cause you a lot of trouble.

Car care is more than just rotating the tyres and changing the oil. You also need to take care of your car’s fuel system. Good fuel injectors and system additives can help with this.

Best Fuel Injector Cleaners & System Additives for the Money

Last updated on 2022-05-22 at 16:32; affiliate links; images from Amazon Product Advertising API

What Is a Fuel Injector Cleaner?

Even though fuel injectors have been around since the 1950s, they are only standard on newer models of cars. The fuel injectors help the car run as well as it can.

When the car runs and diesel and gasoline run through the engine, carbon deposits form inside the fuel injectors and the engine. This causes the car to use more fuel, lose power, and even break down.

A fuel injector cleaner is basically a chemical liquid that you add to your car’s fuel from time to time to get rid of buildup and deposits in your car’s fuel system. It also helps clean the fuel injectors and makes sure the engine of the car works well.

Usually, a fuel injector cleaner is added to the fuel every once in a while. This helps get the best gas mileage and makes sure your car runs at its best.

You should always use a fuel injector as part of your regular car maintenance.

Do You Need to Use a Fuel Injector Cleaner for Your Car?

Every time you put gas in your car, you add impurities that can stop the fuel injector from firing on all cylinders. The cleaner, which is made up of high-tech formulas and special serums, gets rid of the buildup that dirty fuels leave in the car’s gas.

Some people think you should use a fuel injector cleaner every time you put gas in your car, while others think it should be used every time you change the oil, and still others think it’s enough to use a fuel injector cleaner once a year.

And some people are sure that you shouldn’t use these cleaners at all. But the best choice is to take the middle way.

Things to Consider Before Buying a Fuel Injector Cleaner

It can be hard to decide on the right fuel injector cleaner.

Make sure that the fuel cleaner you want to buy meets certain requirements before you go ahead and buy it.

Know Your Engine

When you buy a fuel injector cleaner for your car, you have to make sure you get one that works best for your car.

For example, a diesel fuel injector cleaner won’t work right on a car with a gasoline engine, and vice versa. Using the wrong one on the wrong kind of engine can cause serious engine problems.

Buy a cleaner that works with your engine, the fuel you use, and how you use the engine. When compared to regular cars, high-performance cars are more sensitive to dirty injectors, which can hurt the engine.

For example, if you have a sports car, you need to make sure the fuel injector is very clean. This is different from a regular utility car.

Purchasing the Right Amount

There are different sizes and amounts of fuel injector cleaning fluid on the market. You can buy a small bottle or a gallon.

Since the cleaner can catch fire, it should be stored safely and kept out of reach of children when not in use.

You could buy a small amount that would only be enough for one cleaning or a few times. But if you decide to buy a lot of it, make sure to store it safely.

Look for Manufacturer Recommendations

Not every cleaner for fuel injectors works with all kinds of car engines. So, before you buy the cleaner, it’s a good idea to look at what the maker says.

You can avoid making mistakes and get the best results this way. Before you buy and use a fuel injector cleaner, you should always do some research.

Check Fluid Strength

Most new cars have catalytic converters built in. These converters are part of the car’s exhaust system and work with the exhaust from the fuel.

When the fuel fumes and cleaner mix, it can sometimes cause damage, and your car’s “engine check” light may come on.

Most of the time, this doesn’t hurt the catalytic converter, but if you use the wrong fluid or if the fluid is too strong, the catalytic converter could get burned.

Cost Efficiency

The cleaner should not only clean well, but it also shouldn’t be too expensive or wasteful, since you’ll be using it a lot as long as you have the car.

Reviews of the Best Fuel Injector Cleaners

There are a lot of fuel injector cleaners on the market, and there are hundreds of them. This makes it hard to figure out which one is best for your car.

Here, we’ve talked about some of the best ones so you can choose the best one.

Liqui Moly Fuel Injection Cleaner

Liqui Moly Fuel Injection Cleaner

The Liqui Moly Fuel Injection Cleaner is made in Germany and is only for gasoline car engines. It helps keep the car from stalling, having trouble starting, etc.

The cleaner helps clean your car’s fuel injection system by removing carbon deposits from the valves and pipes. This helps the car use fuel more efficiently and keeps it from backfiring.

Customers like the Liqui Moly fuel injection cleaner because it gives them more miles per gallon and because it is easy to use. With the handy applicator, you can add it to your gas tank to top it off.

Even though there isn’t much cleaner, it’s enough for about 18 gallons of fuel. However, the cleaner’s effects only last for 1,000–2,000 miles at most.


Catalytic converter-equipped cars will benefit the most from this.

Lessens fuel emissions and consumption.

It has a tool that makes it easy to use.


Bottle size is quite small.

Only works with cars that have gasoline engines.

Where to Buy

On Amazon


The Liqui Moly fuel injection cleaner is a great cleaner, and people who have used it say that it improves the car’s acceleration and how easy it is to drive.

Best of all, the cleaner fluid isn’t too expensive, which makes it a great choice for your car.

ISO-HEET Injector Cleaner

ISO-HEET Injector Cleaner

The ISO-HEET injector cleaner is made by the Gold Eagle Co. in Chicago, which was started in 1932. It is a very versatile fuel cleaner that can both get rid of water and keep fuel from freezing.

The cleaner fluid can be used all year long in both 4-cycle and 2-cycle diesel and gas engines. This makes it a great choice for people who own cars.

The ISO-HEET injector cleaner gets rid of the extra water fuel in the fuel system, which keeps rust and corrosion from happening.

The ISO-HEET has a built-in antifreeze, which is great if you need to fill your gas tank when it’s below zero.

And when ISO-HEET is not being used as an antifreeze, it can be used to get rid of water and condensation in hot weather.

Because it is an antifreeze, it is recommended that you use a bottle of the cleaner every time you add fuel in the winter, which can be expensive.

Even so, ISO-HEET is worth it in case of extreme conditions because it has benefits.


It is one of the few cleaners for fuel injectors that also works as an antifreeze.

Can be used in engines that run on both diesel and gasoline.

Helps get rid of water from the fuel system, which keeps rust and corrosion from happening.


When used often, it can get expensive.

For general cleaning, it might not be as good as the other cleaners.

Where to Buy

On Amazon


The ISO-HEET injector cleaner can be used for a lot of different things. It is a great product for keeping your car running well, especially in harsh weather.

But because it can be used for so many things, it may get expensive over time. Still, this is a good product to think about and a great choice for cold climates.

BG 44K Fuel System Cleaner

BG 44K Fuel System Cleaner

The BG 44K Fuel System Cleaner has been on the market since 2013 and is one of the fuel injector cleaners with the highest ratings. The cleaner fluid can fix up about 20 gallons of gas and make your car’s fuel injector work better.

The best thing about the BG 44K is that it works with all types of fuel systems and can make your vehicle have more power and better combustion.

In addition to being a great cleaner, the BG 44K is also very easy to use.

So, the BG 44K is a great product to buy if you want a cleaner that will clean your fuel system well, get rid of all the impurities, and improve your car’s gas mileage and performance.


Can clean up up to 20 gallons of gas.

Simple to use.

Increases the amount of power and the quality of combustion.


Compared to other fuel cleaners in the same category, it is pricey.

Where to Buy

On Amazon


Even though BG 44K fuel system cleaner doesn’t come in a lot of bottles, one bottle can treat 20 gallons of gasoline, which is a lot.

The cleaner is one of the most effective products in its category because it is easy to use. It helps improve the power output and combustion quality, so you should definitely think about getting it for your car.

Final Thoughts

We already know that the gas we put in our cars is never 100 percent pure. It always has impurities in it that can build up over time and cause problems.

So, using a cleaner for your fuel injector not only helps your car run better, but it also keeps your engine from breaking down and makes the fuel injector last longer.

We hope that our buying guide and reviews can help you figure out which car cleaner is best for you.