The Best Way to Flush Engine Oil

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Best Way to Flush Engine Oil

How much do you love your car? As much as I love myself, I am really fond of it. Can you prove it? 

Oh, yes! I can do everything that requires to keep it healthy and attractive as it was when I first brought it home. Since then I never ignore any little things that may create problems for it later. 

Yes, that’s what you’re, passionate and concerned about your car and always ready to provide the necessary maintenance to keep it in a better condition. Here we will discuss the best way to flush engine oil.

What is Flushing Engine Oil?

As you know that the engine oil is used in your cars to keep the engine working smoothly while the wheels are rolling. But after driving a certain mileage the oil becomes old and it starts depositing sludge and other junk that not only reduce the speed of your car but also create a lot of problems for your car engine. Keeping all these in mind you need to follow a process and that is called engine oil flush. This only can be taken place after the old oil is drained and the new oil is added. Between these two processes, you have to add some specific chemical additives to the engine of your car.

How Necessary The Process is?

If you’re serious enough to maintain the proper condition of your car then you must need to obtain this process. If you can apply a good engine flush to your car it can help loosen deposits, dissolve sludge, and bring back your engine to normal condition as it was before. But there is an alternative theory where you’re told that having sludge helps oil from slipping through worn or cracked seals. Let’s find the benefits of engine sludge in detail.

  1. Applying an engine flush helps loosen sticky valves and remove sludge. This cleaning process allows the fresh oil to work properly. Unless the oil will not give the same result as it is intended to do.
  2. If the sludge and other deposits go throughout the engine it can prevent the normal function of the engine which means wastage of fuel. If the sludge and other deposits are removed your engine works more efficiently that also at the expense of minimum fuel.
  3. If the piston rings are deposited by sticky sludge and other things and that transferred into the combustion chamber, then the burning results in high emission from the tailpipe. A good engine flush helps to reduce this problem by making the ring clear of all these.
  4. Sludge and other deposits work as an insulator to your engine that prevents the engine from releasing heat. This may cause the oxidization of oil and reduces the efficiency of your engine. Only a sludge-free clean engine can manage the heat and increases the activity of the engine and oil life as well.

Best Way to Flush Engine Oil

If your car already has covered 7,000 km and that also without servicing and oil change, then it is obvious that the engine of your car will start to form sludge. If so, then you have to consider immediately following the engine flushing process to keep your car engine back in working condition. To perform the process you need a few things that may come in useful for that purpose. They are-

  1. Flush treatment
  2. Fresh engine oil
  3. A large container to fill the old oil
  4. A new oil filter
  5. An oil filter wrench

Step 1: Park your car on a flat surface let the engine temperature comes into normal. This will allow the liquids to flow through the engine more easily. Now open the hood, remove the engine cap, and pour the necessary amount of the engine flush treatment into the engine. Then tighten the oil cap and close the hood.

Step 2: Now start your car and let it idle for 10-15 minutes. But it may take some more time if the sludge is found more severe than expected. The additive that is presents in the treatment is a kind of stronger detergent that can provide complete cleaning to the engine.

Step 3: After 15 minutes when the cleaning process is expected to be completed you can turn off the engine and drain the oil. To do this you have to remove the drag plug and keep the container to the right place and allow the sludge and the old oil to flow into that. TO get a better result, you can use pressurized air for this job.

Step 4: Along with changing old oil, you have to replace the existing oil filter as well. This necessary thing needs to be done before adding new oil. To do this you have to loosen the oil filter using an oil filter wrench and allow the excess oil to drain out. Now take a new filter, add some new oil to the filter gasket, place it to the right place, and then tighten it using your hands. After the job is done drag the plug-in back to your engine.

Step 5: Before adding new oil make sure that the grade, rating, and weight of the new oil should be as directed by the manufacturer. All you need to pour the oil slowly into the engine and at the same time check the oil level using a dipstick to avoid overfilling.

Step 6: After the completion of the whole process successfully, you have to place the oil cap back on and turn tightly to close it. Now close the hood of your car and in this way, your job is done.

When to Do an Engine Flush?

Some indications will alert you about the presence of sludge and other deposits in the engine that should be removed before it can create too many problems in your car. Though if you flash your torch into the engine you can see the shining of the sludge, but there are some genuine symptoms of sludge. Here they are-

  1. You can see the oil warning light on even while driving your car.
  2. The hydraulic lifters seem quite noisy.
  3. The pressure of oil gets lower gradually.
  4. You may find some dark greasy sludge on the oil filter.
  5. The draining of old oil seems too slow after removing the drain plug.

The Types of Engine Flush

There are different types of engine flushes available, in the market. Among them, three main types are mostly used by car owners.

Gasoline Engine Flush

These types of engine flush are particularly used in vehicles powered by gasoline engines. There are many gasoline engine flush brands that are specially formulated to work for those engines that cover higher mileage and are also designed to work in a short time to remove dirt and sludge from your engine.

Diesel Engine Flush

This type of flush is for heavy engines or diesel engines of trucks, cars, SUVs, etc. Diesel engines are tended to deposit harmful carbon, gunk, and sludge more early than other kinds of vehicles. This kind of engine flush is specifically designed to flush out all these harmful elements easily and quickly.

Gasoline and Diesel Engine Flush

Apart from the first two, there is one more type of engine flush that comes in handy to remove sludge and other harmful deposits from both gasoline and diesel-powered engines with equal efficiency. This is surely an advantage as you don’t have to be worried about the type of engine where you need to use it. 

The Main Features of An Engine Flush

Some significant features should be present in an engine flush with better quality. Here they are-


Solvents are added to the engine flush to remove the carbon deposits, gunk, and sludge from your engine. Some contain mild solvent to clean the outer sludge only while some have a strong solvent for deep cleaning. But many car owners do not like to use strong solvents as they may damage the engine seals and gaskets.


There are many additives are added in a single-engine flush. The blends of different additives like detergents, dispersants, lubricants, rust inhibitors make the flush very effective in the cleaning job of your engine.


There are two kinds of engine flush. The first one doesn’t require any extra effort to add to the engine. But there is some kind of flushes that require some special tools to flush out the engine.

The Final Words

Think of a human heart. It cannot work properly if its arteries are blocked. It is a situation that invites different ailments of the heart and some of them are really fatal that can even take you close to death. The engine of your car is exactly like your heart. If it is clogged with sludge and other deposits then your car also will run poorly and also it can shorten your car’s life. Using the engine flush procedure is the essential cleanup program that helps your engine run smoothly and lasts for a longer period. So, keep doing the flush engine oil frequently to make your ride always a hassle-free joyride.

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