Recycling Waste Oil: 4 Methods that Make It Usable Again

Waste OilOil isn’t something you simply throw away. Even if the used or contaminated oil you have on hand is useless to you, other people could still utilize it in some other way. Waste oil treated at an oil recovery facility, for example, is processed and turned into an alternative fuel. Other oil recyclers then get the by-products to use for various purposes.

Here are four ways that waste oil collection facilities typically turn waste oil into something usable again – an idea that the environmental ministry would approve of.


Dewatering used waste oil involves separating the oil from any water within it. After separating them, the oil becomes burner fuel or goes through further processing.

Filtering and Demineralisation

The process of filtering and demineralisation gets rid of solid particles, inorganic materials and specific additives in waste oil. The end product is burner fuel or feed oil.

Propane De-Asphalting

When waste collection facilities conduct this process, they remove heavy bituminous fractions from the waste oil. As such, they produce two outputs: de-asphalted lubricating oil and propane.


Finally, waste oil may go through either one of the two distillation processes: atmospheric or vacuum distillation. Atmospheric distillation heats used oil with temperatures up to 300°C to separate the liquids. It may be a pre-treatment for vacuum distillation, which heats used oil to separate liquid and vapour. The end products are recycled lubricant, hydraulic and transformer oil.

The processes may sound complicated, but the gains of recycling used oil far outweighs simply discarding it. By taking your used or contaminated oil and turn it into something usable to society, oil recyclers reduce our overall waste output.

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