Is Grease Flammable? 

This article will answer the question, “is Grease flammable?”. It also covers several topics about grease, its contents and applications, and how to respond to fire ignition caused by grease. 

Is Grease Flammable?

Yes. Grease is flammable. Most greases will burn, but they are usually not considered fire hazards. Most lubricating greases use mineral oil or a synthetic fluid made from hydrocarbons as the lubricating fluid. 

These materials are usually thought to be flammable because their flash point is at or above 38°C (100°F).

What Is Grease?

Knowing the different kinds of grease and what they are used for will make your work in the field easier. The use of grease is not according to the style or machine’s specifications. The lubrication interval will be shorter (wasteful). 

Even if you don’t grease the bearings right, they won’t last as long. Even worse is if there is downtime or time wasted on repairs that need to be done right away.

What Are the Types of Grease?

Grease is usually divided into four types based on its use:

  • Grease High Temperature

It serves to lubricate elements that have high temperatures

  • Grease High Load 

It is suitable for lubrication when heavy loads are used.

  • Grease High Speed 

Utilized on things that move quickly

  • Multipurpose grease has many uses for different lubricating parts.

What Are the Content of Grease?

Grease comprises three main components: oil, a thickening agent, and additives. Thickeners are like foam in that they hold oil and its additives together.


The thickening agent helps the oil form more complex chemical bonds. A gel-like substance is made when the oil and thickening agent are mixed. Metallic soap, made of lithium, aluminum, clay, polyurea, sodium, and calcium, is often used to thicken oil today.

In recent years, people have used a lot of more complicated thickening agents. This complex thickening agent mixes metallic soap with more complicated substances, like low-molecular-weight organic acids.


Petroleum is the main ingredient in most grease that is made today. Petroleum was chosen because it works well as a lubricant and can be used in almost all situations. But synthetic oils work better when used at very high or low temperatures.


Additives work to give grease the needed properties, such as making the properties that are required stronger, making the properties that are not needed weaker, and making the properties that are required.

What Are the Benefits of Using Grease?

Here are the functions and goals of using grease to lubricate parts of a vehicle:

  • It makes a lubricating film between the two areas that touch, which helps the parts of an automobile last longer and not wear out too quickly.
  • It keeps rust and corrosion from building up on vehicle bearings.
  • Grease is also used to soak up the heat when two surfaces or layers of a car part rub against each other.
  • Reduce or stop the noise that can be made when two parts of the car rub against each other.
  • Become a different system for sealing.
  • Dust and dirt from the outside can’t get into the car, so it doesn’t stick to the parts.
  • Attaches and lubricates two different parts of the car engine so that it doesn’t cause damage or, at worst, causes the car engine to leak.
  • Also, grease and engine oil do different things and serve other purposes.

How to Respond in the Event of a Fire Caused by Grease?

Because there is oil in grease, there is a chance of a fire. In the event of a fire, you need to do the following:

  • The best way to put out a fire in a hot pot or pan is with water. Use this method more than once on the burning ship or container to put out the fire.
  • Firefighters must wear a coat that won’t catch on fire, gloves, a helmet with a face shield, and rubber boots.
  • During a fire or an explosion, you might be near dangerous gases. Using a mask to filter the air you breathe is an excellent way to stay safe.
  • You should take all the containers away from the fire if you can.
  • Putting water on the fire won’t help; it will only worsen things. The fire could produce sulfuric fumes, which smell bad and can hurt you if you breathe them in.

You can learn more here.


There is a risk of fire ignition due to exposure to grease. As a result, it must be handled with caution and under all applicable health and safety standards.

Frequently Asked Question (FAQs): Is Grease Flammable?

Does grease have more benefits than oil?

Oil is usually the best choice when there is a lot of friction, and the speed is high. But other parts that take a lot of weight or move up and down usually need grease. Grease is made to stay in place and keep metal parts, like wheel bearings, from moving against each other.

Is grease harmful to people?

People think synthetic oils are safe and do not cause cancer. Aside from the chemicals that cause cancer, petroleum also contains toxic chemicals that make it very dangerous and poisonous to eat a lubricant. 

Hydrocarbons are a large group of compounds, including motor oil and hydraulic fluids.

Is grease a chemical?

Grease is a lubricant usually made by reacting base oils, metal hydroxides, and acids. Its consistency ranges from semi-liquid to solid and is made up of emulsifying agents that depend on where it is used.


What was missing from this post which could have made it better?

Leave a Comment