5 Best Engine Flushes for Your Vehicle – Review & Comparison

Best Engine Flush

You may have seen experts and car enthusiasts use and recommend the engine flush. But what is it exactly?

In short, the engine flush is a solution that you mix with your engine oil so as to get a boost in performance.

In addition, the engine flush also contains many additives that will clean the various moving parts in your engine as well as prevent the formation of sludges.

This will immediately translate in better performance and more efficient operation of your engine.

Here is a quick overview of the many benefits and advantages of using an engine flush:

  • Better fuel efficiency
  • Lubricates your engine and prevents wear and tear
  • Improves your mileage and fuel economy
  • Prevents the formation of sludges and the deposit of debris

Needless to say, the engine flush is also extremely easy to apply. You simply need to remove your engine cap and pour the container in the engine. It’s that easy!

Our engine flush review below contains some handpicked models that will guarantee immediate results. Let’s get to it!

5 Best Engine Flushes - Reviews

Image

Product Name

Rating

Current Price

Liqui Moly 2037 Pro-Line Engine Flush

1. Liqui Moly 2037 Pro-Line Engine Flush

4.6

CRC Salt Terminator Engine Flush

2. CRC Salt Terminator Engine Flush

4.3

Prolong Super Lubricants Engine Treatment

3. Prolong Super Lubricants Engine Treatment

4.7

Niteo Medic MF2 Engine Flush

4. Niteo Medic MF2 Engine Flush

3.9

XADO Total Oil Engine Flush

5. XADO Total Oil Engine Flush

3.6

1. Liqui Moly 2037 Pro-Line ​– Affordable & Universally Compatible

Editor's Rating: 4.6 out of 5 stars (4.6 / 5)

Liqui Moly 2037 Pro-Line Engine Flush

One of the biggest advantages of the Liqui Moly is that it has been made in such a way that it is universally compatible with any engine, whether it is gasoline or diesel. It is quite versatile. Also, when it comes to price, this engine flush is one of the best deals that you can get.​

Moreover, this engine flush contains many additives that will help prevent the formation of sludges inside the engine as well as diminish any wear and tear.

This product will work very well with a high mileage oil since it contains many additives that will benefit an old engine.

Also, this engine flush will make pistons, valves, and any type of accentuated switches run more efficiently. The main benefit is that you will see a boost in performance as well as fuel economy in your vehicle.

If this is the first time you use an engine flush, then the Liqui Moly is one of the best engines flush that you can buy.

It will work almost immediately, and it is quite versatile, so you don’t have to worry whether you have a gasoline or diesel vehicle. It will simply work!

However, due to the metal bottle used ​for containing this engine flush, it may easily dent during handling or shipping. Nothing big​, but something that you may want to keep in mind.​

Pros:

  • Affordable and value for money
  • Universally compatible with any type of engine
  • Lubricates and make the various moving parts in your engine run more efficiently
  • Dissolves any sludge and prevents debris from accumulating in your engine

Cons:

  • More effective on old motor engines than newer ones
  • The metal bottle may damage easily during shipping

Notes

This engine flush is suitable for engines that have an oil capacity of 5 L or less. Also, this engine flush is recommended for old motor engines instead of new ones.

2. CRC SX128 Salt Terminator ​– Removes Salt & Corrosion Quickly & Easily

Editor's Rating: 4.3 out of 5 stars (4.3 / 5)

CRC Salt Terminator Engine Flush

If you need a lot of engine flush to completely clean your motor from salt and corrosion, then few products can beat the CRC Salt Terminator. Indeed, you get no less than 1 gallon of salt and corrosion remover with this purchase.

But even better, one of the biggest advantages of this engine flush is definitely its versatility. It can be used in almost any type of vehicle, whether you have a boat, PWC, truck, etc. you can even use it to clean furniture, at least according to the manufacturer.

You also have the possibility to purchase this engine flush in different sizes depending on your need. Neat!

Simply mix it with water as per the instruction and wash your engine block. Due to the versatility of the CRC Salt, you can also use it to clean other parts of your vehicle as well.

However, when used the right way, this product is one of the best ways to flush engine oil from your vehicle as it is extremely effective in removing any type of salt and corrosion. It will make your engine almost new again as the engine will be able to flow more easily inside. 

Just be careful with using it because this engine flush is not for beginners and you may need some prior experience with it. Also, remember that it is only effective for removing salts and corrosion ​from your engine.​

Pros:

  • Very effective in removing salts and corrosion
  • You get no less than 1 gallon of engine flush
  • Versatile. Can be used in a wide range of situations, including to clean furniture
  • Flexible. You can purchase this product in different size depending on your need

Cons:

  • Not for beginners when used in an engine
  • Limited in use. Only effective for removing salts and corrosion

Notes

In case you use this engine flush in your motor, you will need to fully evacuate your motor and let it dry before you can pour in new engine oil.

3. Prolong Super Lubricants PSL11000An Effective Engine Flush With Many Additives

Editor's Rating: 4.7 out of 5 stars (4.7 / 5)

Prolong Super Lubricants Engine Treatment

The Prolong Super is a special type of engine flush that contains many additives. In fact, many experts and car enthusiasts use this specific engine flush because it is extremely effective in making an engine run more efficiently.

Furthermore, this top-rated engine flush will work with universally any type of vehicle regardless of whether you have a diesel or gasoline engine.

It contains many additives that will protect the various moving parts from regular wear and tear as well as prevent any leaks from happening.

Moreover, if you have a debris accumulation problem in your engine, then this engine flush will definitely help.

This is because it contains technologies inside that will immediately remove any debris and prevent further sludges and debris from accumulating. For even more versatility, you also have the option to purchase this product in different sizes to suit your need. Whether you need only 12 oz or a gallon, you are covered.

The only problem we have with this engine flush is that the price could have been better because it is a little bit high. Also, you get only 354 mL which may not be enough to fully flush a big engine depending on the vehicle you are planning to use it on.

Pros:

  • Contains many additives to protect your engine
  • Flexible. Ability to purchase different sizes
  • Removes sludges and prevents debris from accumulating

Cons:

  • The price could have been a little bit more competitive
  • You get only 354 mL of engine flush

4. Niteo Medic MF2 ​– Engine Flush for High Mileage Vehicles 

Editor's Rating: 3.9 out of 5 stars (3.9 / 5)

Niteo Medic MF2 Engine Flush

If you are the proud owner of a high mileage vehicle with at least 75,000 miles on the counter, then the Niteo Medic should interest you.

This engine flush has been made specifically for high mileage engines. It contains additives inside that will prevent further wear and tear of your old engine as well as promote the circulation of oil inside.

If you have a sticky valve problem, this engine flush with also help as it will disintegrate any sludge and debris accumulation it finds inside your engine block.

But one of the biggest advantages of the Niteo Medic is that it works in only 5 minutes. Yes, you do not have to wait a long time with this engine flush.

For this reason, this product is often seen as being one of the best diesel engine flush on the market. Not only will it make a high mileage engine run more efficiently, but it will also benefit a diesel engine as well which is even better.

However, you must observe due diligence when using this engine flush because it does not contain a cap. Once you open it, you cannot store this product for future use and you will have to use all of it.

Pros:

  • Will make any high mileage engine run more efficiently
  • Works effectively in 5 minutes
  • Prevents the formation of sludges and cleans valves and piston in your engine block

Cons:

  • The can do not contain a cap. You must use all or nothing

5. XADO 40613 Total Oil ​– Removes Debris & Contamination from Your Engine 

Editor's Rating: 3.6 out of 5 stars (3.6 / 5)

XADO Total Oil Engine Flush

The main advantage of the XADO Total is that it contains an advanced formula that makes it more effective when compared to competing products. Indeed, this product will offer your engine with a complex flush treatment so that it can remove any sludge, contamination, and debris that it finds inside.

Moreover, it will also protect your seals and piston and prevent oil leaks from happening. Application is extremely easy by absolute beginners and if you have never used an engine flush before, then don’t worry.

This engine flush comes with a detailed instruction manual that will show you exactly how to ​use it. The only caveats we note with this product is that the price could have been a little bit more competitive. Also, this ​product is not ideally suited for small and compact motor engines.​

However, taking everything else into account, including the additives that it contains, we nominate this product as the best engine flush additive that you can buy. It is extremely effective and works exactly as advertised.

Pros:

  • Contains many additives that will make your engine to run more efficiently by removing debris and contamination
  • Comes with a detailed instruction manual on how to use
  • Universal engine flush. Works with all engine types

Cons:

  • The price could have been more competitive
  • Not ideal for very small motor engines

Notes

Even if you get only 250 mL of engine flush with this purchase, it should be enough for an average sized engine of 4 L to 5 L

How to Buy the Best Engine Flush

How to Buy the Best Engine Flush

Before finding the best engine flush for the money, there are some important factors to consider. Here are some of the most common ones to keep an eye out for:

#1. Compatibility

One of the most important aspects when purchasing an engine flush is compatibility. Indeed, some engine flushes are made specifically for a type of vehicle and should not be used in other engines as it may cause harm.

When looking for an engine flush, check for terms like “universal” to see if the engine flush has any specifications.

Additionally, you may need to ask your vehicle manufacturer or check your vehicle manual to see if there are any mentions of compatible car flushes.

#2. Additives

Additives are simply chemical compounds that manufacturers add in their engine flush products so as to make them more versatile and effective.

Each additive has a specific role. For example, your preferred engine flush may contain an additive that will prevent regular wear and tear of the various moving parts inside from happening.

Additionally, it may also have a seal protector that would protect your seals and prevents oil from leaking.

When it comes to additives in an engine flush, the more, the better. Indeed, the more additives the engine flush contains, the more functions it will be able to perform.

#3. Efficiency

The whole point of using an engine flush is efficiency. With that said, not all engine flushes are created equal as some are clearly more performing than others.

You should check out the various benefits of each engine flush and try to make out if it suits your need. Alternatively, you can read our review above to get our expert opinion.

#4. Easy to Use

One of the biggest advantages of the engine flush is its ease-of-use. Indeed, even if you have no experience using an engine flush before, you will have absolutely no problem using it.

All you have to do is pull cap and pour the liquid inside your engine in a similar manner as you would change your engine oil.

#5. Increase in Mileage

Since the engine flush makes your engine run more efficiently, it also increases your mileage. Many engine flush manufacturers usually mention the increased mileage that you may get from using their products.

You may use that figure to compare between the different engine flushes before you make your mind.

#6. Gasoline or Diesel Engine

There are 2 main types of engines on the market. Gasoline and diesel. Not all engine flush products are compatible with both. You need to ensure that you order the right type of engine flush for your vehicle.

Luckily, most high-quality engine flush products are universally compatible with move diesel and gasoline engines.

However, it is still important that you keep an eye out for any specificities of the product.

#7. Oil Volume

In general, 500 mL or even 250 mL of engine flush will be sufficient for a 5 L engine.

Nevertheless, you may have a bigger engine and will need to ensure that you order the right capacity of engine flush for your vehicle.

Conclusion

As we have seen, the engine flush will immediately give your vehicle a boost in performance.

In addition, it contains many additives that will not only make your vehicle more efficient but also help protect the various moving parts inside your engine. This makes your engine as a whole last longer.

One of the best things about the engine flush is that it is extremely easy to use and is also quite affordable.

On a final note, our engine flush review above contains some handpicked and quality models. If you’re not sure which engine flush to purchasing yet, then we recommend you read it again.