Top 9 Best Diesel Fuel Additives of 2021 Review & Buying Guide

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Diesel fuel additives are a great way to get a slow, lazy engine running like a sparkling new engine in no time. Diesel fuel additives not only keep your fuel fresh for longer but increases the fuel economy and power of your vehicle.

That is why so many manufacturers now have a line of diesel additives, which also means a lot to choose from. This can become quite a headache, but do not worry; we’ve put together an in-depth review just for you.

So, let’s get straight to it and take a look at the Best Diesel Fuel Additives you can buy…

Best Diesel Fuel Additives

Top 9 Best Diesel Fuel Additives to Purchase in 2021 Reviews

  1. LUCAS Fuel Treatment – Best Value for the Money Diesel Fuel Additive
  2. Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 – Best Diesel Fuel Additive for Cleaning
  3. Hot Shot’s Secret Diesel Extreme – Best Diesel Fuel Additive for Improved Performance
  4. Biobor JF Diesel Biocide and Lubricity Additive – Best Professional Grade Diesel Fuel Additive
  5. Archoil AR6200 Fuel Treatment – Most Versatile Fuel Additive
  6. REV X High Performance Oil Additive – Best Non Toxic Diesel Fuel Additive
  7. Power Service 08080-06 Diesel 911 Fuel Additive – Best Diesel Fuel Additive for Winter
  8. STA-BIL Diesel Fuel Stabilizer and Performance Improver – Best Diesel Fuel Additive for Storage
  9. Archoil AR9100 Oil Additive – Best Diesel Fuel Additive for Lubrication

1 LUCAS Fuel Treatment – Best Value for the Money Diesel Fuel Additive

Lucas motor oils and fuel additives are some of the best on the market, with reliable performance and great prices. This fuel treatment works with both gasoline and diesel engines, whether it be fuel injectors or carburetors. Therefore, it is often called the best fuel additive on the market.

Save on fuel costs…

This blend of smooth, fluid oil has extremely high detergent properties that clean the insides of your engine. This allows the engine to run at its full capacity with no hiccups.

It also helps to keep the insides of the engine lubricated, reducing friction and making fuel burn thoroughly. As a result, this additive works to reduce fuel consumption.

Cleaner emission, less pollution…

It can also be used on older vehicles that emit too much carbon dioxide and fail the emissions test. Adding this will reduce a lot of the smoke that might exit the exhaust and help in passing the emissions test. It also reduces the harmful effects that low sulfur diesel has on the environment.

LUCAS Fuel Treatment
Our rating:4.8 out of 5 stars (4.8 / 5)

Pros

  • Can be used for gasoline and diesel.
  • Keeps engine well-lubricated.
  • Reduces fuel consumption.

Cons

  • Only comes in a 1-gallon container.

2 Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 – Best Diesel Fuel Additive for Cleaning

Royal Purple’s Max-Clean is one of the best all in one fuel additive and stabilizers that does so much more than just keep the engine running well.

Great for any kind of engine…

This additive will clean your injectors, help reduce your vehicle’s fuel economy and keep any build up that might cause troubles at bay. The additive aims at the intake system and combustion chamber of the vehicle.

This means it works with gasoline and diesel engines. It can be used on any type of vehicle, whether it is turbocharged or naturally aspirated.

Results right away…

Just one treatment of Max-Clean is enough to improve your vehicle’s fuel economy by 2-3%. Plus, it reduces carbon emissions from the exhaust, allowing older vehicles to pass the emissions test.

It also prevents cars from idling roughly or not starting in the cold. It will also keep your spark plugs fresh for longer. So, if you are looking for a quick fix to get your engine running a little smoother and faster, then look no further.

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722
Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Versatile.
  • Reduces carbon emissions.
  • Improves fuel economy.

Cons

  • Price.

3 Hot Shot’s Secret Diesel Extreme – Best Diesel Fuel Additive for Improved Performance

Hot Shot’s Secret Diesel Extreme additive has been designed to offer extra engine performance when added to your car or truck. This additive is one of the best fuel system cleaners, as well as being a great diesel fuel additive.

Adding this at your next top-up will see your engine cleaned up. The additive will rejuvenate your engine by cleaning the fuel system, injectors, and fuel tank. It even removes excess moisture. This keeps the engine running like a stallion whilst reducing wear and tear.

What’s the secret?

When used with Hot Shot’s other additive, the Secret Station Eliminator, your vehicle will get a complete wash from the inside out. This additive does have anti-oxidants added that keep the diesel in your tank fresh for longer.

However, it also means this additive cannot be used with gasoline. That said, it is perfect for diesel engines on trucks, cars, and even farming equipment.

Hot Shot’s Secret Diesel Extreme
Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Anti-oxidants keep diesel fresh for longer.
  • Cleans the engine well.

Cons

  • Cannot be used with gasoline engines.

4 Biobor JF Diesel Biocide and Lubricity Additive – Best Professional Grade Diesel Fuel Additive

Biobor JF diesel additive is a biocide and lubrication additive used by professionals for the last 50 years. It has long been one of the best diesel fuel additives on the market.

What is biocide?

The term refers to any chemical or micro-organism that gets rid of or controls harmful organisms in your fuel system and engine. Kind of like a pesticide for your fuel.

The result is that Biobor JF successfully prevents any sort of microbial growth within the fuel. By stopping it from spoiling, it helps keep the fuel fresh for months on end. It also prevents corrosion that might occur from the diesel and tank.

Protection the pros trust…

It also adds lubrication to keep parts of the engine like the injectors and fuel pumps running smoothly. All of this results in an excellent product that keeps your engine safe, lubricated, and performing at its best.

Biobor JF is used by major airlines, armed forces, and even refineries that need a product that stops and controls any sort of bio-contamination that might occur. If they trust and use this product, then you know it is good.

Biobor JF Diesel Biocide and Lubricity Additive
Our rating:4.8 out of 5 stars (4.8 / 5)

Pros

  • Trusted and used by large companies.
  • Biocide keeps diesel fresh and free of bio-contamination.

Cons

  • Price.

5 Archoil AR6200 Fuel Treatment – Most Versatile Fuel Additive

Archoil AR6200 is one of the best multi purpose fuel additives because it can be used with gasoline or diesel. Convenient if you are unsure which product to buy for your gas type.

AR6200 is made with Archoil’s combustion modification technology. They claim it can reduce soot and carbon build-up inside the engine. It also lubricates the engine from within and protects engine components from basic wear and tear, as well as boosting engine performance and endurance.

Ideal for storage…

It is also a diesel treatment that can be used to keep diesel fresh for months on end in storage. Great for winter months when your truck might be stored or for gardening equipment that isn’t used during the cold season.

A word of warning…

Beware when using this product on old engines that have never been cleaned. If there is too much grime in the engine, unclogging it could cause problems inside the engine.

Archoil AR6200 Fuel Treatment
Our rating:4.8 out of 5 stars (4.8 / 5)

Pros

  • Stabilizes diesel fuel.
  • Lubricates the engine well.

Cons

  • Not recommended for old vehicles that have not been serviced.

6 REV X High Performance Oil Additive – Best Non Toxic Diesel Fuel Additive

REV X High Performance Oil Additive is perfect if you do not like any of the harmful additives that might come with fuel additives. But will still offer the same increased engine performance and protection that so many other fuel additives do.

This additive has been made with getting the best performance out of your engine in mind. It is compatible with all types of lubricating fluids, which helps reduce friction and heat in the engine, offering an extra boost of performance.

An eco-friendly additive…

With many ingredients now banned, such as sulfur and zinc, REV X has formulated an additive that gives the same results without any of those harmful chemicals.

If you are having trouble starting your engine in cold weather, this additive will quickly fix the problem, as well as offer a boost in fuel economy.

REV X High Performance Oil Additive
Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • No harmful chemicals added.
  • Keeps engine lubricated.
  • Boosts engine performance.

Cons

  • The performance increase isn’t as noticeable as other brands.

7 Power Service 08080-06 Diesel 911 Fuel Additive – Best Diesel Fuel Additive for Winter

Power Service 911 diesel fuel additive is just like the name says, a great emergency use product. If you are struggling to get your truck started in the cold winter months, look no further than Power Service’s 911 additive.

Superb for colder climates…

This product is made to reliquify gelled fuel as well as unfreezing frozen fuel filters. Thereby restoring the flow of the diesel fuel to the engine. It is often the first choice for the best cold weather diesel additive.

However, it is important to note that this additive is not made to prevent fuel gelling, but instead is used when it has already happened.

Power Service 08080-06 Diesel 911 Fuel Additive
Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • Quickly gets a cold or frozen engine running.

Cons

  • Does not prevent fuel from freezing or gelling.

8 STA-BIL Diesel Fuel Stabilizer and Performance Improver – Best Diesel Fuel Additive for Storage

STA-BIL is an excellent fuel stabilizer that is used to store fuel when it is not needed. This prevents the fuel from spoiling in storage for months on end.

Practical and versatile…

STA-BIL can be used with all types of fuel. It prevents the fuel from turning into sludge or making sediments, which could cause serious damage in a vehicle or any motor of sorts. Therefore, if you’re looking for the best diesel anti gel additive, this is your best bet.

Furthermore, when used inside a vehicle, it also keeps the engine parts lubricated and running smoothly. Likewise, it helps clean the engine of any carbon build-up or water.

STA-BIL Diesel Fuel Stabilizer and Performance Improver
Our rating:4.8 out of 5 stars (4.8 / 5)

Pros

  • Versatile.
  • Keeps fuel fresh for long periods.

Cons

  • Does not provide any engine performance boost.

9 Archoil AR9100 Oil Additive – Best Diesel Fuel Additive for Lubrication

Another entry from Archoil. Their AR9100 Oil Additive has been made with diesel and gasoline engines in mind, making it a versatile oil additive.

Lubricates just about everything…

This oil has specifically been made to create a lubricating film that protects not only injectors and the fuel line, but also your gearbox and hydraulic systems. It also works great to help engines start in cold weather and stops issues caused by misfires.

Adding this to the oil of your vehicle will help increase the power of the engine and its response time, whilst reducing friction and wear and tear. It will also help with vibration and noise from the engine as well as cleaning and preventing any sludge or carbon deposits.

Keep your cool…

Although this product works great with engines that struggle to start cold, it is not suited to unfreeze or liquify gasoline or diesel. This happens mostly in extremely cold environments and will need a special additive to fix the problem.

Archoil AR9100 Oil Additive
Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • Helps with cold starts.
  • Keeps engine clean and lubricated.
  • Versatile.

Cons

  • Not suited for freezing temperatures.

Best Diesel Fuel Additives Buying Guide

Best Diesel Fuel Additives Review

Buying the right diesel additive isn’t as easy as it sounds. With so many different brands and types available, we have put together a guide for things to look out for before you spend your hard-earned money.

Why use diesel additives?

The first reason to use diesel additives is to save money. Most additives will reduce your vehicle’s fuel consumption as well as keep the engine in good condition, keeping repair costs low.

This is mainly due to the lubricating nature of the additives. They keep friction and heat lower than just normal diesel. Some of these additives can be added to oil for hydraulics and gearboxes as well.

Dealing with the weather…

Another reason to buy diesel additives is for cold starting. Some older vehicles might struggle to start during cold weather, and using an additive will help with cold starts.

Driving with extremely cold diesel is a bad idea since it tends to become waxy, which could damage the engine. Adding some diesel additive will keep it liquid, even during colder months.

Cleaner emissions…

Diesel additives also keep the engine from emitting too much carbon dioxide, which could lead to the vehicle being considered unroadworthy. Adding diesel additives will clean up the gunk in the engine, causing this excess of emissions, helping your vehicle pass emissions tests.

Apart from reasons to buy diesel additives, there are many different types of diesel additives and each with its perks. The most common types of additives include are listed below.

FUEL STABILIZERS

All fuels spoil eventually given enough time. This can become costly, especially for trucks that are used only a few times a year, as well as seasonal equipment like lawnmowers. Fuel stabilizers stop the oxidation of diesel, keeping it fresh for months on end.

CETANE BOOSTERS

These types of additives usually boost the fuel economy and reduce the vehicle’s ignition delay time. A higher cetane improves engine performance as well as lowers emissions by cleaning up carbon deposits in the engine.

FUEL INJECTOR DETERGENTS

These are used to clean the engine. Diesel can be a breeding ground for bacteria, mold, and other micro-organisms. These help clean any dirt clogging the vehicle’s injectors, which could lead to damage if unchecked. It also cleans other parts of the engine, which leads to a smoother and more efficient engine.

ANTI-GEL ADDITIVES

Diesel starts gelling up and becomes waxy when exposed to the elements. This will make starting the engine not only impossible but could lead to a lot of damage. Anti-gel additives will liquify diesel fuel so the engine can easily start, even in severely cold weather.

Looking for Something Else?

To keep your vehicle running smoothly, check out our in-depth Best Radiator Cleaner Fluids Reviews, our Best Oil Additives To Stop Leaks Reviews, our Best 5W30 Synthetic Oil Reviews, our Best Octane Booster Reviews, and our Best Oil Additives for Older Engines Reviews for more great products you can buy in 2021.

You may also like our comprehensive Best Car Wash Soap Reviews, our Best Car Buffers & Polishers Reviews, our Best Car Drying Towel Reviews, our Best Car Chrome Polish Reviews, and our Best Rubbing Compounds Reviews for excellent car cleaning products currently available.

What are the Best Diesel Fuel Additives?

Our choice of the best diesel fuel additive is the…

LUCAS Fuel Treatment

Striking the perfect balance between price, features, and versatility, LUCAS Fuel Treatment is the best product for your vehicle. Whether you want to store diesel for long periods, clean up the injectors, or get better performance from your vehicle, LUCAS Fuel Treatment will have you sorted in no time.

Until next time, may the road treat you right.

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