Best Oil Additive for Engine Knock: Reviews 2021 (Updated!)

by Chris Lewis.

Is the engine area of your car making an annoying pinging sound? Are you wondering why it is making that sound and how can you solve it?

Well, that sound is generally stated as a knocking sound. There are two reasons behind it. One is that there is an imbalance of fuel to air mixture. And the other is that the main components of the engine are not adequately lubricated.

Among two of the reasons, the lack of lubrication is the most common. And if you do want to solve it, you will have to get yourself the best oil additive for engine knock. But choosing one is easier said than done. Well, that is where we step in. We are going to make things much more manageable for you.

Editor's Recommendation: Top Oil Additive for Engine Knock 2021

Image Name Ratings
TriboTEX Nano Additive Car Treatment
Price Check
4.5 / 5.0
REV X Stiction Fix Treatment - Two 4 fl. oz. Bottles
Price Check
4.7 / 5.0
Archoil AR9100 16oz) for All Vehicles
Price Check
4.6 / 5.0

Top 10 Best Oil Additive for Engine Knock

 Top 10 Best Oil Additive for Engine Knock
Top 10 Best Oil Additive for Engine Knock

Because of how oversaturated the market is, choosing one of these becomes harder than it has to be. For that reason, we have ventured through the most popular picks and selected only the ones that offer up to mark performance and are worth the money. The ones that we have hand picked for you are as follows:

1. Sea Foam SF-16 Motor Treatment - 16 oz.

An easy and hassle-free solution for all sorts of vehicle problems is always preferred. And that is what Sea Foam is here to offer with this treatment solution.

First of all, the process of adding the additive to the engine is exceptionally straightforward. All you have to do is open up the lid and pour it into the fuel intake channel. You will not have to go through any other complicated tasks, nor will you need any other special tools.

Once you have poured it inside the engine, it will first clean off the fuel injectors. Alongside that, it will clean the carburetor passage inside. That means if you have impurities inside the fuel tank, it will take them all out.

Aside from that, it will clean the oil and fuel residues that remain inside. Your intake valve will be free from obstructions, which will ensure an efficient flow of oil.

It will also solve the stabilization problem of diesel fuel. You can expect the fuels to remain stabilized for up to two years after you pour it in.

Apart from that, the liquid solution will control the overall moisture. Because of that, rusts on the main components would not be something that you would have to worry about anymore after putting this in.

Most importantly, it will lubricate the upper area of the cylinders. That will solve any of the knocking problems that you might be facing.

Pros

  • Pouring process is simple and straightforward
  • Cleans oil and fuel deposits
  • Lubricates the upper area of the cylinders
  • Controls the moisture
  • Efficiently stabilizes the fuel

Cons

  • Some of the cans may arrive damaged
  • Takes a bit of time to get into effect

2. REV X Stiction Fix Treatment - Two 4 fl. oz. Bottles

REV X Stiction Fix Treatment - Two 4 fl. oz. Bottles
REV X Stiction Fix Treatment - Two 4 fl. oz. Bottles

Buying a bulk amount of treatment additive to treat all the oil that you have inside your car can become a bit taxing on the wallet. Well, REV X kept that in mind when they were bringing out this package to the market.

First of all, there are five different bundle options available. You can get any from 1 to six-pack bundles. Each of them will be four ounces in size. Two of these four ounces bottle is more than enough to treat up to twelve quarts of fuel. You are not going to spend that much.

Other than that, the liquid is highly efficient in the case of cleaning impurities that might be inside the fuel intake channel. From varnish to sludge to oil and fuel deposits, it can clean all of them. The channel will be squeaky clean after you add this inside.

Aside from that, the additive can reduce the friction significantly. It will create a microscopic layer on top of each of the core components.

Because of that friction reduction layer, the oil will be able to reach the areas that it once could not. As a result, the performance of your car will see a massive improvement.

Apart from that, this will remove the stiction that is quite common in the injectors. You will not even have to use any sort of additional chemical strippers. And it will remove those without causing any damage to the components.

Pros

  • Five different bundles available
  • 8 ounces can treat about 12 quarts of oil
  • Cleans harmful deposits
  • Efficiently removes striction
  • Enhances the overall performance

Cons

  • Can not properly stabilize diesel
  • Does not have the ability to control moisture

3. Archoil AR9100 16oz) for All Vehicles

Archoil AR9100 16oz) for All Vehicles
Archoil AR9100 16oz) for All Vehicles

Deposits on the engine can substantially reduce the overall performance. But if you treat your fuel with this additive that Archoil is offering, you will not have to worry about that anymore.

Let us talk about the most highlighting feature of this liquid first. It will efficiently remove and clean any carbon deposits, sludge, and varnish that tend to build up inside the channels. By doing so, your engine will see a massive performance enhancement. It will be able to perform at its peak.

Aside from that, it can efficiently lower the overall friction. It will create a protective layer on top of the core components.

As a result, the overall system will have fewer frictions during the combustion process. Also, the produced heat and noise will also see a dramatic decrease after the frictions get reduced.

Besides that, the unit will be able to extend the oil cycle. As a result, you will not have to drain it frequently.

It will also increase the amount of TBN in the fuel, which will prevent it from getting acidic over time. Also, it will improve oxidation stability, which will reduce the overall rate of degradation.

Alongside that, it creates a solid boundary of a lubricating film on the surfaces of the components. That film will provide an exceptional amount of protection while the engine is under load. Eventually, the lifespan of it will get enhanced significantly.

Pros

  • Extends the oil cycle significantly
  • Increases the TBN
  • Stabilizes the oxidative molecules
  • Reduces the overall amount of deposits
  • Efficiently lowers down the friction rate

Cons

  • Some of the injectors of the engine can become sticky
  • Might not work that well on some diesel systems

4. Liqui Moly 2037 Pro-Line Flush - 500 Milliliters

Liqui Moly 2037 Pro-Line Flush - 500 Milliliters
Liqui Moly 2037 Pro-Line Flush - 500 Milliliters

You will stumble upon a lot of best oil additive for engine knock in the market. But there will hardly be a few that can clean both rapidly and gently. Well, this unit that is offered by Liqui Moly is among those few.

To start with, it has a very simple and straightforward usage process. It comes in a bottle of 500 milliliters. And you will only have to take off the cap and mix it with the oil of your engine. It will start its process right after that. You need not have to go through any sort of extra hassles.

Aside from the easy usage process, the unit is compatible with most of the catalytic converters. That means you will not have to worry about whether it will work on your engine or not. Alongside that, it mixes well with almost all of the diesel and other fuel systems too.

And it will not cause any damages to any of the aftermarket seals that you might have done to your system.

You will also not have to worry that much if you have installed other materials inside the system. It will be neutral to all of them. That is why we have mentioned earlier that it will provide gentle cleaning.

Apart from that, it can efficiently clean out all of the oil deposits and fuel deposits that tend to build up over time. As a result, the flow of oil inside the intake channels will be smooth.

Pros

  • Neutral to the other installed materials that might be in the system
  • Does not damage any sealings
  • Cleans sludge and oil deposits
  • Compatible with most of the system
  • Easy to use

Cons

  • Might not work that well in some of the engines
  • Number of varnish does not lower that much after use

5. TriboTEX Nano Additive Car Treatment

TriboTEX Nano Additive Car Treatment
TriboTEX Nano Additive Car Treatment

Even though most of the additives will be able to solve the knocking problem to some extent, not all of them will be able to ensure a smoother overall performance. And if you were looking for something that can do that, you should consider this one TriboTex is offering.

Unlike some of the other units, this one contains nanoparticles in it. Because of containing those synthetic nanoparticles, it will be able to ensure smoother combustion. As a result, your car will face fewer hiccups in performance.

Apart from that, it will create a diamond-like coating on the bearings. That carbon coating will reverse the wear of the bearings. Because of that, you will not have to face any sort of annoying noise while driving your car.

The unit is also universal. It is compatible with all the types of motor oils that are out there. Aside from that, you can also use it in diesel and gas systems. Even if your system is old, it will allow it to push out the performance that it did when it was new.

Alongside that, the unit will make your system highly efficient. It will lower down the overall consumption of the fuel. Alongside that, it will also improve the efficiency in the case of transferring the oil from one intake to the other.

Lastly, it comes in a syringe that makes it pretty easy to add it to your system. In fact, you can do it within a matter of minutes.

Pros

  • Makes the engine substantially quieter
  • Builds a carbon protective coating on the core components
  • Smoothens the flow of oil
  • Makes the system efficient
  • Comes in an easy to use syringe-like container

Cons

  • Might not show that much improvements in some of the systems
  • Performance gain is not that substantial

6. Lucas AI Innovations LUC Heavy Duty Stabilizer 1 Gallon

Lucas AI Innovations LUC Heavy Duty Stabilizer 1 Gallon
Lucas AI Innovations LUC Heavy Duty Stabilizer 1 Gallon

Are you facing difficulties in the case of starting your vehicle in cold temperatures? Want something that will mitigate the dry start problem? Well, then you should definitely consider picking this stabilizer that is from Lucas Oil.

Let us talk about the formulation of the stabilizer first. It is from 100 percent petroleum. Lucas has specially formulated it to make it compatible with any type of system. Whether you are running on diesel, synthetic, or semi-synthetic oil, it will blend exceptionally well with all of them.

Apart from that, it will be able to adequately lower the overall amount of friction that occurs on the system during combustion. It will create a protective layer on the parts for achieving it. As a result, the performance will remain consistent throughout the combustion process.

Other than that, as it is going to lubricate all the cylinders and other crucial parts of the system, you will not have to worry about dry starts anymore. It will also allow the system to start in cold environments properly.

Alongside that, it can significantly reduce the overall operational temperature. Because of that, the efficiency of the engine will have a substantial improvement. It will consume a considerably low amount of oil to combust.

Lastly, it comes in a bottle of 1 gallon. That means no matter how often you change the oil, you will be able to use it for an extended amount of time.

Pros

  • Formulated of 100 percent petroleum
  • Compatible with all types of systems
  • Reduces the overall heat production
  • Increases the efficiency substantially
  • Comes in a large 1-gallon container

Cons

  • Creates sticky valves on the cars that have variable valve timing
  • Can not properly clean up the deposits

7. BestLine Premium Synthetic Engine Treatment

BestLine Premium Synthetic Engine Treatment
BestLine Premium Synthetic Engine Treatment

Most of the additives that available will offer you an instant and short time solution for the knocking problem. However, this one that is from BestLine that we are going to describe is not one of them.

To start with, BestLine has utilized a hundred percent synthetic formulation for this treatment. As a result, it will blend well with any of the oils and fuels that are out there.

Also, it is compatible with any variety of engines. No matter if you are on diesel or gas or any other hybrid system, it will work with all of them without any issues at all.

Because of having that formulation, it will be in effect for a long amount of time. It will also help in the case of lowering down the oil change period. You will not have to that frequently. It also lowers the low-speed and pre-ignition problems.

Aside from that, this one has a higher ability to reduce the overall friction. It does that by building a film over the crucial parts, allowing the oil to flow through each of the corners. Because of that, the efficiency will see a massive rise, resulting in more mileage.

Other than that, by reducing the amount of friction, it will be able to reduce the wear and tear of the parts too. As a result, you can expect your engine to have a longer lifespan after you pour this into it.

Pros

  • Features a formulation of pure synthetic molecules
  • Enhances the lifespan of the engine
  • Reduces wear and tear of the crucial parts
  • Compatible with all the systems
  • Lowers pre-ignition and low-speed problems

Cons

  • Does not feature any deposit cleaning ability
  • Can make some of the systems of Lexus, Scion, and Toyota gunky

8. Prolong Super Lubricants PSL11000 Treatment

Prolong Super Lubricants PSL11000 Treatment
Prolong Super Lubricants PSL11000 Treatment

Are you worried that the treatment you will put in your vehicle will add more obstructions in the fuel channels? Well, you can stay completely worry-free about that by picking this one up that Prolong Super is offering.

To start with, the formulation that it has is fully free from solid particles. It is free from PTFE resins, Zinc, Graphite, or Copper. You will not be adding any obstructions on the fuel path by putting this into your system. As a result, your engine will be clean, like it should be.

Aside from that, the unit is formulated with AFMTM. That composition is specially engineered to lower the overall friction in the parts. For that reason, the number of wear and tears will be reasonably low, enhancing the overall lifespan of the system.

Alongside that, you will not even have to worry about the compatibility that much. The composition that it features is compatible with most of the systems that are out there. Whether you are rocking gasoline or a diesel vehicle, you can put this one the intake without any worries.

Besides that, it can efficiently lower the overall produced heat. As a result, your four-wheeler's main component will run much cooler, which will enhance the overall efficiency. You will also get more mileage too.

Lastly, there are three different container size options available. You can choose from 1 gallon, 8 ounces, and a 12-ounce bottle.

Pros

  • Ability to reduce friction substantially
  • Available in three different sizes
  • Lowers the operational temperature significantly
  • Extends the lifespan of the engine
  • Does not contain any solid particle in the formulation

Cons

  • No sludge cleaning properties
  • Some of the bottles arrive with broken seals

9. BG MOA Part # 110 Supplement

BG MOA Part # 110 Supplement
BG MOA Part # 110 Supplement

Oxidation is one of the main culprits that promotes sludge to grow inside the fuel paths. And BG MOA implemented a highly engineered formulation in this supplement to mitigate that.

First of all, the additive creates a layer of lubrication on all of the crucial parts. As a result, metal-to-metal contact will decrease dramatically. For that reason, the wearing and tearing of the parts will also take place at a slow pace, which will extend the overall lifespan.

Aside from that, the amount of friction will also be decreased because of the lower metal-to-metal contact. Thus, the fuel will be able to reach every area, which will increase the overall efficiency substantially. You are sure to get an elongated mileage after you put this into your system.

Apart from that, because of the increase in efficiency, heat production will also see a decrease. For that reason, the chances of performance getting throttled will also be substantially low. You are not going to have to worry about low-speed anymore.

As we have mentioned above, the formulation reduces oxidation substantially. It will clear through all the fuel screens, sludge build-ups, and deposits that remain in the paths. That means all the components will remain clean and will perform optimally after putting this in.

Lastly, it will make the fuel inside highly stable. You will not have to change it that often because of that.

Pros

  • Lowers down the rate of oxidation
  • Makes the fuel stable
  • Prevents metal-to-metal contact
  • Cleans impurities and sludge build-ups
  • Makes the system exceptionally efficient

Cons

  • Comes in a relatively small container
  • Container leaks relatively easily

10. Bar's Leaks - 1000 - 16 oz

Bar's Leaks - 1000 - 16 oz
Bar's Leaks - 1000 - 16 oz

We would like to wrap up our review section with this additive that Bar's Leaks is offering. If you were searching for something that will increase the fuel's pressure, you should definitely pick this one up.

Let us start by talking about the cleaning capability of the unit. After you put it inside your system, it will clean all the films, sludge, and deposits that usually remain on the paths.

Doing so will make sure that the fuel does not face any obstructions while traveling through the components.

Other than that, it creates a lubricating film on the core parts. That film will reduce overall metal-to-metal contact. As a result, the friction rate will also decrease substantially. Because of that, the system will create a reasonably lower heat during the combustion process.

As the operational heat is going to drop down, the efficiency will also see an increase. Because of that, the consumption of the oil will lower down significantly. You will not have to spend that much money on your diesel vehicle after putting this in.

Aside from that, lowering down the overall friction will also ensure that the operational noise gets lowered. It will solve the knocking and other annoying sounds that engines tend to make sometimes.

Lastly, it will stabilize the fuel and make it achieve optimal pressure. Because of that, the flow will also be optimal.

Pros

  • Makes the pressure optimal
  • Increases the overall efficiency
  • Quiets down knocking and other noises
  • Improves the fuel economy
  • Lowers down the operational heat

Cons

  • Can make some of the systems gunky
  • Might not work that well in some of the systems

What to Look for While Buying Best Oil Additive for Engine Knock?

Before you do make a purchase decision, you will have to keep some factors in mind. Without keeping them in mind, you might just get yourself something that will offer you no performance or benefits at all. The things that you will have to keep in mind before making a purchase are as follows:

  • Formulation

The first thing that you will have to consider is the formulation of the additive. In that, what you need to ensure is whether there are any solid particles or not.

You should avoid the ones that contain PTFE resins, Zinc, Graphite, or Copper. Those will promote sludge and deposits, which you would not want.

Moreover, the ones that you should shoot for are the ones that are of 100 percent petroleum or those that have are of the synthetic formulation. Those will not promote any sludge, nor will they let deposits gather on the pathways.

  • Compatibility

After you have taken the formula of the unit into consideration, you need to check whether the additive is compatible with your system or not. Most of the available ones will be compatible with diesel and gas systems.

However, there are many that do not go well with gas systems. So if you have a gas system, you should check whether the additive that you are planning to purchase is compatible or not.

  • Ability to Reduce Friction

One of the important tasks of these is to reduce the overall friction that occurs during the combustion process. By mitigating or lowering the friction amount, most vehicles' sound will get lowered down substantially.

That is why we would suggest shooting for the ones that can create a lubricating layer on top of the components. Those can lower down the friction substantially.

  • Cleaning Capabilities

In most cases, knocking sounds are generally created because of the deposits and impurities that remain in the system. Changing the entire oil can be a bit taxing at that point.

And that is where the additives with cleaning capabilities come into play. Keeping that in mind, we suggest shooting for the ones that can efficiently clean the system's paths and core parts.

  • Ability to Increase Efficiency

Usually, the ones that can lower down the friction rate holds the ability to increase the overall efficiency. However, there are many that will only lower down the friction but will not increase the efficiency that much. Those are the ones that you should avoid.

In this case, what you should look for are the ones that can lower the operational temperature. With the drop in temperature, the efficiency will eventually see an increase. As a result, you are going to get a considerably high amount of mileage.

  • Fuel Economy

Another thing that you need to keep into consideration is whether the additive can improve the fuel economy or not. In most cases, the ones that can make the increase the efficiency will lower down the fuel consumption.

Also, they will be able to improve the fuel economy. Those will allow you to save a couple of bucks in the case of fuel. And those are the ones that you should opt for.

  • Viscosity

Last but not least, you need to consider if the one that you are planning to purchase matches the viscosity of your oil or not. You do not want to go for the ones that have a higher viscosity.

Those will not mix with the fuel and will result in making things gunky. Instead, you should opt for the ones that have a lower or equal viscosity in comparison to the fuel that you have inside.

Types of Oil Additives for Engine Knock

You should know about the types of additives that are available in the market. By having a general idea about them, you will be able to make an efficient overall purchase. The types that are available out there are:

  • Viscosity Modifiers

These are generally mixed with regular fuel. The main function of these is to prevent the fuel from becoming watery and thinner over time. Yes, fuels do tend to achieve that characteristic after being exposed to high temperatures.

Alongside that, these will also improve the fluidity, which will reduce the wear and improve the fuel economy.

  • Anti-Foaming Agents

The anti-foaming agents generally contain chemicals that will inhibit bubbles and foam. If foam does build up inside, it will promote the oxidation process, which will eventually lead to corrosion. These will help in the case of preventing that from happening.

  • Friction Modifiers

The main functionality of friction modifiers is to decrease the overall friction that occurs between metal surfaces. It does that by developing a layer of lubrication on the parts.

As a result, the metal-to-metal contact drops down significantly. These also help in the case of lowering down the wear, which eventually elongates the lifespan.

  • Anti-oxidants

As we have mentioned earlier, oxidation is one of the main culprits that make the parts of the engine wear down.

And if the oxidation process is not controlled, the longevity of the parts will be considerably low. Well, that is exactly what anti-oxidants do. They lower down the oxidation rate.

  • Detergents

One of the most efficient cleaning additives that are available in the market is detergent additives.

These will get rid of all the sludge, impurities, deposits, and other solid-objects that obstruct the paths. As a result, the fuel flow will be optimal. Also, as these are basically alkaline, they will neutralize the acidity level of the fuel.

What Causes Engine Knock?

The knocking sounds of the engine is quite a common phenomenon that occurs for plenty of reasons. And the main reasons behind this occurring are as follows:

  • Faulty Plugs

Usually, over time the plugs can become faulty because of the wear and tears. And when they do become faulty, fuel will burn unevenly within the cylinders. The uneven burning will create a ping sound during the combustion process, which is also known as the knocking sound.

  • Low-Quality Fuel

Sometimes the reason behind the knocking can be the quality of the fuel. Generally, the low-quality ones can not flow properly in between the parts, which can produce the knocking sound.

  • Insufficient Amount of Lubrication

In most cases, the knocking problem will occur because of the lack of lubrication. When there is not enough amount of lubricants, the friction amount increases a lot, which can produce the pinging sound.

  • Presence of Deposits

Lastly, the presence of deposits in the paths can cause this problem to occur. Because of sludge and other deposits, the fuel sometimes can not reach every part inside.

As a result, those parts can not operate optimally, which will make them produce this knocking sound.

Oil Additive Frequently Asked Questions

1. Are oil additives absolutely necessary?

Adding additives is always recommend because of all the benefits that they tend to offer. But if you think that you have a high-quality fuel that does not require any extra additives, then you can skip it.

2. Do new cars require oil additives?

Usually, new cars that did not even tread for 5000 miles do not need any sort of additives. In fact, adding these can prove to be harmful to them.

3. How often should I refill the additives?

We recommend adding these additives after each oil change. As with changing the oil, you are also discarding the additive that you have used before. So you should add them again when you are changing the oil.

4. What exactly is engine sludge?

Because of oxidation, the fuel inside the engine can thicken. And when they do thicken up, a tar-like heavy substance forms, which is called sludge.

5. What will happen if I ignore the knocking sounds?

Ignoring these types of problems for engines can cost a costly repair. In fact, at some point, it might even stop combusting. That is why you should not ignore it.

Final Words for Oil Additive Buyers

Hopefully, our best oil additive for engine knock review section was short enough that it is now easier for you to choose one for yourself. To conclude, we hope that the one you decide to get solves the knocking problem and enhances your engine's performance.

Buy on Walmart

Sea Foam SF-16 Motor Treatment - 16 oz. - Walmart Link

Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates - Walmart Link

Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml - Walmart Link

Lucas AI Innovations LUC Heavy Duty Oil Stabilizer 1 Gallon - Walmart Link

Red Line 81403 Engine Break-In Oil, 16 Ounce, 1 Pack - Walmart Link

BG MOA Part # 110 Engine Oil Supplement - Walmart Link

REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles - Walmart Link

Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart - Walmart Link

BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure - Walmart Link

Buy on eBay

Sea Foam SF-16 Motor Treatment - 16 oz. - eBay Link

Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates - eBay Link

Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml - eBay Link

Lucas AI Innovations LUC Heavy Duty Oil Stabilizer 1 Gallon - eBay Link

Red Line 81403 Engine Break-In Oil, 16 Ounce, 1 Pack - eBay Link

BG MOA Part # 110 Engine Oil Supplement - eBay Link

REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles - eBay Link

Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart - eBay Link

BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure - eBay Link

About Chris Lewis.

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