What Happens to Your Old Engine Oil? Shocking Truth!

Engine oil plays a very important role when it comes to vehicles and it is said to be the lifeblood of the vehicle itself since it helps with the smooth operation of the engine’s moving parts which is known to create friction and heat which is why oil is essential as it helps to lubricate the moving parts as well as to diffuse the heat.

Let’s not forget that when oils make their way through the engine they tend to collect impurities such as chemicals, dirt, and even water. As time goes by, this usually results in the oil becoming less effective at doing its job, hence leading to engine problems. This is why over time it is important to change your vehicle’s engine oil.

What Happens to Your Old Engine Oil?

What Happens to Your Old Engine Oil

It’s safe to say that used engine oil is known to contain contaminants that it considered to be a pollutant, which can be bad for the environment around us. The problem is that it actually takes years to degrade, which allows it to be affixed to everything it touches and is insoluble. This is the very reason why it is important to dispose of used oil properly. You’ll find that some people simply poured oil in the drain or on the street, but that is never a good thing to do.

So, if it’s a case where you have any uses oil in your possession, then it would be best if you put it in a container and take it to a used oil recycling facility. You can head to the county council transfer station since they are known for accepting used oil. Apart from that, you can even take visit to your local garage since they are also known to take used engine oils, due to the fact that they add it to their storage of oil.

How is Used Oil Recycled?

It may sound a bit surprising but used oil can be cleaned and reused. The old oil is usually turned into new oil, lubricants, and fuel oils and used for raw materials. Not only that but the old engine oil is said to be comprised of metal which allows it to be recycled. Here is how the refining process work.

  • The first thing they’ll do is extract the water from the oil and this can be done by putting it in a large settling tank, which then separates the oil from the water.
  • At this point, the oil will be filtered and demineralized which will allow it to remove any inorganic material, solids, and certain additives that can be found in the oil, giving a cleaner burner fuel for further refining.
  • Now it is time for propane deasphalting to extract the heavier bituminous fractions, which will then bring forth a more refined base oil.
  • The oil will then be distilled to produce re-refined oil that is suitable for usage as a lubricant, hydraulic, or transformer oil.


If you care about your environment and the people around you, then you will take the time out to dispose of your engine oil properly at your local garage for safety. As you can see, the oil is usually cleaned, refined then reused, meaning that there is no wastage.