How to Remove Water From Engine Oil? 4 Steps to Follow

Have you noticed your engine oil looking milky? This could indicate water has entered the system and caused damage. We don’t think it is a good idea to ignore this warning signs.

Once you have become aware of this problem we think it is best to take action quickly, there are several potential fixes. These include centrifugal force or coalescence as well as adding an alcohol-based dispersant.

How to Remove Water From Engine Oil

How to Remove Water From Engine Oil

There are several ways in which you can actually remove water from engine oil, these include:

Coalescer or Centrifuge

There is no doubt that water is not a good thing for motor oil, and it can have an adverse effect on its performance. What it does is alters the basic stock, promotes oxidation, increases viscosity, permits foaming and leads to rust and corrosion.

Water in motor oil can damage an engine by warping, leading to piston rod snaps. Not only that but it could reduce journal bearing life expectancies by up to 90%.

There are several methods for removing water from lube oil, including using a coalescer or centrifuge. Both systems are capable of taking out both water and solids from diesel fuel, jet fuel, and other lubricating oils.

Coalescer systems work by separating small droplets of water from a liquid and then condensing them into larger ones, which helps the particles fall out more readily – making them ideal for extracting water from engine oil.

Read Also: What Causes Air Bubble in Engine Oil

Alcohol-Based Dispersant

It is safe to say that an alcohol-based dispersant is another additive that helps to remove water from engine oil. It may also be employed to absorb small amounts of moisture from a vehicle’s oil tank.

The thing is that alcohol is an organic compound widely used in various industries such as fuels, antiseptics and solvents. It has the unique property of being highly effective at extracting water from oil.

Dispersant formulations typically consist of multiple nonionic and anionic surfactants mixed together that have lipophilicity and hydrophilicity, then dispersed in one or more organic solvents such as ethylene glycol, glycol ethers, or nonaromatic hydrocarbons.

Dispersants can be beneficial in the oil-spill response process, but they have several downsides such as lengthy treatment times and dependence on environmental conditions.

Since recently, research has focused on non-chemical methods to minimize these concerns – these have been dubbed bioremediation. While these may take some time to achieve results and require significant human effort, dispersants do have many positive aspects – especially their eco-friendliness.

Water-absorbent Sock

An effective way in which you can soak up the water is by inserting an absorbent material into your tank for some time and then simply removing it. These tends to varies in size and shapes but they are known to be made of cloth and are designed in a way so that it can be extra absorbent.

It is safe to say that some water absorbent socks have the ability to soak up to two cups of water. If it’s a case where you have more water than that amount, then you may need to use more than one sock or find one that is considered to be reusable.

Drain Plug

Water in engine oil can denature the oils, impairing their ability to lubricate parts and even cause damage to the engine itself.

One of the best ways to remove water from engine oil is by using a drain plug. Not only is this process easy but it will save you both time and money in the long run.

First thing we recommend doing is to locate the drain plug on your oil pan. Next you should take a container and place it beneath the plug to collect any dirty water or oil spills.

Once the plug is loose, start slowly taking it out. Check to see if any water or antifreeze has come out during this process. If not, you may need to contact your local mechanic for assistance with fixing your drain plug. They will be able to identify problem and supply you with a replacement plug if needed.


There is no doubt that water in engine oil may lead to several issues. This is why you need to take action and get the problem fix as soon as possible. When water is in engine oil is usually results in friction instead of lubrication. It’s best to keep in mind that water in engine oil will cause your engine to fail which can lead to costly repairs.