Can You Recycle Hydraulic Oil with Motor Oil?

Waste oil, including hydraulic, motor, and automotive lube oil, must be disposed of in a way that is safe and traceable. Waste associated with used oil is subject to strict regulations.

The Product Management for Oil Scheme supports increased waste oil gathering and recycling.

Several Waste Management work to eliminate waste associated with synthetic and petroleum-based oils, such as the disposal and recycling of hydraulic oil and used lube or mineral oil.

In contrast to most substances, hydraulic oil can be refined to create new relying and fuel oils that can be repeatedly used.

The concern is whether motor oil and hydraulic oil can be combined before recycling.

What Types of Oil Can You Recycle?

Refined oil that has been properly recycled and meets all performance standards for new oil can be used once more.

Different types of oil can be reprocessed and used as fuel or a petroleum raw material.

Everything from the cooking area to the auto shop uses oil frequently. If it is not recyclable, can harm the environment due to improper disposal.

What types of oil can you recycle, though, and how might that be done? Learn more by reading on.

Motor Oil

Your car or truck’s engine contains a viscous fluid called oil that cools, lubricates, and shields the components that move.

Engine oil is safe to use within combusting gas because it also includes additives that retain your engine clean and reduce chemical emissions from engine ignition.

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As engine oil performs its function, it eventually gathers dirt, debris, and biological products, requiring an oil change to maintain the engine in good working order.

However, when this occurs, used engine oil may be gathered and recycled.

Mechanic/ Hydraulic Oil

Any hydraulic structure, including those in heavy machinery and most automobiles with power steering and brakes, must have hydraulic fluid.

It is made of solutions of salt and water-oil fluids so that it can be used safely near ignition sources.

Once the hydraulic oil has accumulated enough impurities, you must also replace it.

Afterwards, used hydraulic fluid can be reprocessed to become new hydraulic fluid, or it can be separated into its constituent parts and used to make new oil products.

Vehicle Lubricant

Vehicles, and other devices like lawnmowers and machinery for industry, contain gear lubricant.

In contrast to motor oil, it is designed specifically to guard against the deterioration of gear systems.

Gear lubricant will eventually need to be replaced because it will become excessively diluted with dirt and debris, just like all of the oil products on this list.

After that, it can be further refined or used as a raw material to make petroleum.

Cooking Oil

In commercial kitchens, cooking oil is frequently used, particularly when frying food. Cooking oil accumulates grease, fats, and food particles as it is used, making it unsafe to use for further cooking.

However, restaurant owners have the choice to recycle used cooking oil rather than throw it away. After being properly filtered, cooking oil can be converted into alternative fuels or even processed into diesel fuel.

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Is It Safe to Mix Hydraulic Oil and Motor Oil for Recycling?

Is it possible to reuse hydraulic and motor oil that has already been used? is a common query.

The recycled oils have a variety of uses, including in bituminous-based extracts, as manufacturing burners, as mould oil to aid in product release etc.

Used oil is extremely hazardous, so, it is crucial to recycle it first before using it again. Burning recycled motor oil without reprocessing raises the level of air pollution.

One litre of recycled petroleum may pollute almost one million litres of water, demonstrating how dangerous it is.

Arguments Against Mixing Hydraulic and Motor Oils

It is never a good idea to recycle motor oil by mixing hydraulic fluid and power steering fluid.

You may be curious why it is so detrimental. Your hydraulic system may suffer if you combine motor oil and hydraulic oil.

The seals and other system parts may become damaged as a result of the two types of oil’s different properties. Use and keep them apart as much as possible.

Combining hydraulic oils may reduce the effectiveness of additives, result in component surface corrosion, and increase mechanical wear.

It is never advised to mix oils with various additive packages.

This could affect the two constituents’ additive performance, and result in an increase in wear on the component.

Some crude oil properties’ trending will also be hampered.

You might be able to combine the oils for a brief period if their viscosities are the same by taking safety measures.

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But keep in mind that, the used oil is converted into hazardous waste by other fluids.

Precautions for Mixing Hydraulic and Motor Oil Before Recycling

If the oils have identical viscosity, you might be able to accomplish away with mixing for a brief period in a pinch.

Take the following safety measures if you want to mix the oils or tolerate an accidental combination until your next scheduled outage:

  1. Visually check for bubbling, poor demulsibility, and sludge.
  2. Boost oil analysis is the rate to detect abnormal wear, corrosion, or lubricant degradation.
  3. Immediately flush and replace the oil. Five to forty percent of the old oil remains in the system after a drain. As a result, a flush will be required.
  4. Continue your regular oil analysis and assessments to ensure that the oil stabilizes.

There are numerous varieties of oil and oil-based products available, and the majority of them can be reused positively.

But mixing two or more oily components while recycling may be detrimental. So, if you’re considering doing so, exercise caution in how you present yourself.


Transmission oil is a hydraulic fluid, whereas engine/motor oil is a lubricant. Despite their similarities, they have very different functions.

Oil for engines aids in improving their efficiency while the transmission of the vehicle is powered by hydraulic fluid.

However, do not mix anything with used motor oil.

Contact the professionals at any scrap oil pickup if you want to recycle your used oil products or gather ideas from them about disposal methods.

They can also remove your used oil from your hands and make sure it is properly recycled.



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