Best Engine Flush Cleaner

best engine flush cleaner

Sea Foam SF-16 Motor Treatment

The Sea Foam SF-16 is the best engine flush product for those who want an effective and environmentally friendly cleaner. It is a stellar performer and reasonably priced.


Every driver needs engine flushing for sludge. After thousands of miles driving, there will be sludge and other elements built up inside the engine and other parts of the fuel system. They will reduce lubrication, make the engine noisy and increase fuel consumption. There are many kinds of engine flush products to deal with engine problems.

To find the best engine flush additives, the two features you need to consider most are convenience and price. If the product is not convenient, you waste time searching for instructions, and you may unnecessarily use too much of the product. In that case, you will waste your money and even damage the engine.

Since most of the engine flush additives have similar performances, it won’t be a good pick if the product does not have a reasonable price.

The following 5 products are the best engine flush additives according to our tests. They all have advantages compared with other available products.

What is the Best Engine Flush Product?

Sea Foam SF-16 Motor Treatment

best engine flush cleaner

Sea Foam SF-16 is the best engine flush cleaner on the market. According to our survey, hundreds of customers choose it as an engine flush additive and most of them were satisfied with its performance. If you choose Sea Foam SF-16 as your engine flush additive, you can’t be wrong.

First, Sea Foam SF-16 is easy to use. It won’t do any harm to your car, so you don’t need to worry about anything. We recommend you to add this product right before oil changes to get better performance. Dump the whole 16 oz bottle in the fuel tank, and let your engine run for 10-15 minutes. You will see a lot of white smoke running out as it works, so make sure you are in an open area. You should use Sea Foam SF-16 every 5000 miles.

Second, Sea Foam SF-16 is also very effective. It helps to clean the gum and varnish deposits or internal engine contaminants. It also solubilizes small amounts of moisture to prevent your car from corrosive fuel, water mixtures and fuel line freeze ups. This product has been widely used in crankcases, fuel tanks, carburetors, frees sticky lifters and rings.

If you get serious problems such as water or dirt in your engine, you should use more. In that case, you should remove all the old oil, mix Sea Foam SF-16 50/50 with fresh gas and run the engine. If it still doesn’t work, then you have to take your car to the garage and get it repaired.

The last thing you need to know is that this product is environmentally friendly. The basis of Sea Foam SF-16 is 100 percent pure petroleum. It has been registered with the EPA so you can save your car and the world at the same time.


Lubegard 95030 Engine Flush

best engine flush cleaner

Lubegard may be one of the best engine flush for sludge nowadays. If you want to keep you car in its best state, you should try this 15 oz product. Comparing with its competitors, it does a better job in removing smaller contaminants in your engine. Lubegard is jthe best internal engine cleaner you should use before every oil change.

You may be curious about why Lubegard is effective. Firstly you should know that the most dangerous contaminants to your engine are between 5 to 20 microns. They will cause
excess wear, higher operating temperatures, and reduced lubrication. The problem is they are too small for normal oil filters to remove. Lubegard has solved this problem. It flushes them out together with sludge, tar, varnish and wear metals. The newly changed oil would keep clean for quite a period of time. So, Lubegard does a better job than other products and makes the engine cleaner.

Lubegard is also very easy to use. If you have a flush machine, you should follow the manufacturer’s directions. If you don’t, you should ensure the engine is warm and add new oil if necessary. Then, add one bottle of the product and circulate. If your car is not maintained well, you need to check the oil screen and pan and clean the dirt while wearing proper protection. You will see its effect after 5 to 10 minutes. After properly using Lubegard, you can save fuel, make the engine work better and prolong its life.


Liqui Moly 2037 Pro-Line Engine Flush

best engine flush product

If you choose Liqui Moly as your engine flush, you will get an easy way to clean your engine. This product does no harm to seals and other materials in the engine, and cleans them in a gentle way. As we investigated, most of its customers are satisfied with the rapid cleaning. Because there are so many kinds of engine flushes on the market, this product may not be the best engine oil flush, but definitely worth a try.

It’s not hard to understand how it works. Liquid Moly will circulate with the oil and remove deposits and residues inside your engine. By dissolving sludge and lacquer and isolating solid particles and liquid contaminants, Liquid Moly improves the combustion process and restores full engine performance. In other words, it doesn’t harm the engine.

When you use Liquid Moly, basically, there are only three things you need to do. First, add a bottle of the product into oil right before your oil change. Then, keep the engine idling for about 10 minutes. Finally, drain the oil in the wasting pan. You can use it together with most kinds of engine oils. It works well in all 4-stroke gasoline engines and diesel engines. But if your car has a high mileage engine, the improvement may not be obvious.


Motor Medic MF3 5-Minute Motor Flush

best engine flush cleaner

Motor Medic MF3 5-Minute Motor Flush is the best engine flush cleaner if you are looking for something cheap. You can get 32 ounces of this product for less than 10 bucks, and it works to clean your engine quite efficiently. It will help you to save gas mileage when you add some engine flush before every oil change.

This product has been designed for city drivers. Basically, it removes gums, varnishes and sludge which accumulates in the engine. The sticky parts will be released so that the oil can circulate freely. It works fast and your engine will be cleaned out in a mere 5 minutes. But if you have serious problems such as water or mud in your engine, this product won’t help. It is a good product for any non-turbo gasoline engine. But if you have a diesel or turbo charged engine, you should try some other products.

If you are going to use Motor Medic to clean your engine, you should follow instructions and be gentle. When you are about to do the oil change, pour it into your engine, run for 5 minutes, and drain it immediately. Then replace the oil filter and fill new oil. It will just be a matter of time before the engine gets smooth and clean.


CRC SX128 Salt Terminator Engine Flush, Cleaner and Corrosion Inhibitor

best engine oil flush

CRC SX128 Salt Terminator Engine Flush is the best engine flush additive for seaside residents. It’s designed to clean and protect engines or anything especially that has been in saltwater environments. If you have a boat, a car or even a fishing tackle which often contacts with water, you definitely need this product.

CRC SX128 Salt Terminator Engine Flush can prevent your engine from all kinds of salt corrosion. It dissolves salt and leaves a protective coating on the inside surfaces of your engine. It helps to protect the engine from saltwater, salt air and road salt and does no harm to the engine. This product is also suituable for engines in freshwater environments.

You may need a lot of this product if your vehicle or boat runs in wet, salty environments. The manufacturer provides 128 ounce bottles of this product, and you usually go through one bottle per year. Luckily, its shelf life is long and it won’t go bad. You should add this product before every oil change and keep the engine idling for a few minutes, and then change the oil. It will help your vehicle to keep its best performance.



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