Can You Mix 32 and 46 Hydraulic Oil? The Answer

can you mix 32 and 46 hydraulic oil
can you mix 32 and 46 hydraulic oil

Engine oil has a significant role in increasing an engine’s life. Therefore, it is recommended to top your engine with high-quality oil. Mixing two different oils before topping your engine is very common, but many experts discourage it.

This is because this practice has proved to be quite detrimental to engines’ health.

If you are here with the question, “can you mix 32 and 46 hydraulic oil?” then you are in the right place.

After doing extensive research, we came up with some notes. We recommend you, read all the details in the following paragraphs to get an answer to your question.

Why is it a bad idea to mix two engine oils?

Mixing two engine oils is bad because it can lead to various issues and complications. Different engine oils may be formulated differently and have different properties that can unpredictably react with each other.

This could cause the oil to become too thick or too thin and reduce its effectiveness in protecting the engine. In some cases, this can even lead to the formation of sludge and deposits that can clog up the engine and reduce its performance.

Mixing two different engine oils could create a lubricant that is inadequate for your specific vehicle’s needs, leading to premature wear and tear on vital engine parts.

Thus, it is best to avoid mixing two different engine oils and stick with one oil for your specific engine.

Taking the right steps to ensure that you are using the correct oil for your vehicle will help keep it running smoothly and last longer.

Different oil types have varying properties, such as viscosity, which can interact with each other in unpredictable ways when mixed.

This could cause the oil to become too thick or too thin and reduce its effectiveness in protecting the engine from wear and tear due to friction.

In some cases, this can even lead to the formation of sludge and deposits that can clog up the engine and reduce its performance.

Using a blend of two different oils may create a lubricant that is inadequate for your specific vehicle’s needs resulting in premature wear on vital components within your engine.

This is why it is best to avoid mixing two different engine oils altogether, so you don’t risk experiencing these serious issues down the line.

Can You Mix 32 and 46 Hydraulic Oil?

As discussed above, it is not a good idea to mix 32 and 46 hydraulic oils. It is quite likely that filling your engine with mixed oil once or twice might not cause any issues, but in the long run, this practice will result in wear and tear on the engine.

Moreover, there is a huge chance that mixed oil will act as a catalyst for corrosion.

In the meantime, mixed oil might look inexpensive, but it reduces the engine’s health at an accelerated pace.

It is quite likely that using mixed oil to top your engine for a while might cause you to change the engine. Therefore, it is advised to use only one oil.

Now the question arises, what happens when we mix two different oils?

As we know that different oils have different characteristics, which can cause reactions upon mixing. Moreover, there are many variables, which act as distinguishing features. The most common of them are:

1. Viscosity

If there is a difference in viscosity between two different oils, this can result in immiscibility.

This immiscibility will reduce the lubrication effect of the oil. Furthermore, it will act as a catalyst for corrosion because of the viscosity gradient.

Corrosion will reduce the wear resistance of the engine, which will, in return, act as a source of reducing the engine’s life.

oil viscosity

2. Chemical formula

Different engine oils are manufactured with different chemical formulas. Moreover, the package of additives is different in different oils.

Therefore, if you are looking to mix two different oils, you should keep in mind that this act might result in unexpected chemical reactions.

These chemical reactions will degrade the piston as well as its cylinders.

The degradation will cause the inclusion of small metal pieces, which will further accelerate the engine’s wear and tear. Thus, avoiding the mixing of oils with different chemical formulas is recommended.

Now if you are wondering about the difference between 32 and 46 hydraulic oil, then you should know that both of them differ in viscosity. Number 32 indicates lower viscosity whereas number 46 indicates higher viscosity.

Most experts recommend using the number 32 hydraulic oil in winter because of its low viscosity. It is because the reduction in temperature causes the viscosity to increase and vice versa.

On the other hand, number 46 hydraulic oil has higher viscosity because of which it should be used during summer.

Another possible side effect of mixing is that it may reduce the overall viscosity of the mixture. If the viscosity is reduced to the advised value, it will affect the lubrication.

This will lead to poor lubrication and overheating

Other than the effects of wear and corrosion, it will increase the engine’s power consumption.

This will in return affect the fuel efficiency of the vehicle. Moreover, the reduction in fuel efficiency can be quite damaging from a business perspective.

How does mixed oil damage the engine?

Using the wrong oil in your car engine can have disastrous consequences for its performance.

When you mix different types of oils, it can cause damage to the internal components of your engine, as well as lead to sludge buildup and clogged filters.

This type of contamination can reduce your car’s fuel efficiency and power output, leading to increased wear and tear on parts that could otherwise last longer with proper maintenance.

As we mentioned above, mixing different types of oil may create an imbalance in lubrication that is essential for a properly functioning engine. Eventually, this kind of negligence will cost you more money in repairs or replacement parts.

It is important to remember that too much oil in your car’s engine can also harm its performance.

Too much oil can create excessive drag on your engine’s internal parts and reduce its efficiency.

Low Performance

If left unchecked, this could cause permanent damage to the components involved, resulting in costly repairs or replacements.

The bottom line is that using the wrong oil or an improper amount of oil can seriously harm your car’s engine.

To keep your car running at its peak performance and avoid costly repairs, always be sure to use the right type of oil. Doing so will help you save money in the long run.

Is the 32 and 46 Hydraulic Oil Interchangeable?

Regarding hydraulic oil, there are many types and varieties available on the market. One such type is 32 and 46 hydraulic oils.

While both of these oils have similar properties, they are not interchangeable, as using one in place of the other can cause damage to your equipment.

It is important to understand the differences between them to ensure you’re using the right type for your needs.

32 Hydraulic Oil is a mineral-based oil specifically formulated with anti-wear additives and detergents designed to prolong the life of your machinery. It also resists oxidation better than most other types of oil, which helps reduce wear on components over time.

This makes it ideal for use in high-pressure systems such as construction or agricultural equipment where long periods of operation may be required without interruption or maintenance breaks.

checking the hydraulic oil

46 Hydraulic Oil is also mineral-based but has different viscosity characteristics from 32 hydraulic oil due to its higher base viscosity index number (VI).

This means that 46 hydraulic oil will remain more viscous at higher temperatures than 32 hydraulic oil making it better suited for applications that require sustained high-temperature operation, such as industrial presses or heavy machine tools used in manufacturing.

While it does offer improved performance, its anti-wear properties are not as strong as those of 32 hydraulic oil, so it should only be used when necessary.

32 and 46 hydraulic oils have similar properties, but their differences make them better suited for different applications. Using the wrong type can lead to performance issues such as reduced efficiency or even equipment damage.

Understanding the differences between the two is important to ensure you’re using the right type for your needs.


After going through the reasons discussed in the above paragraphs, we concluded that using mixed 32 and 46 hydraulic oil could be quite detrimental to your engine’s health.

Moreover, it can be seen that it has aspects that are more negative than positive.

In the short term, it might save you some bucks, but it can be very expensive.

You will likely need to change your engine if you continue to use mixed hydraulic oil for topping it. Therefore, instead of using mixed oils switch towards unmixed ones.

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