What is the difference between Oil and Grease? - ProProfs Discuss
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What is the difference between Oil and Grease?

Asked by T. Lopez, Last updated: Mar 03, 2024

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4 Answers

M. Pollock

M. Pollock

A person who loves taking epic photos and an avid traveler

M. Pollock
M. Pollock, Photographer, BA, Camden Town

Answered Oct 13, 2020

Oil and grease are most times use for the same purpose; they are sometimes confused for the same thing as they both perform the function of lubrication. They are both derived from animal fats. Oils can also be derived from plants, seeds and while grease can be created from different minerals such as silicon, carboxymethyl cellulose, and fluorometer mixed with compounds such as tar, mica, and graphite.

At room temperature, oil is liquid while grease is solid, oil gets solid when subjected to extremely low temperature, and evaporates at really high temperature. Greases are usually thicker than oil.

Oil is versatile and can be used for a variety of purposes, it can be used to cook, as a lubricant, styling your hair and soothing the body, and other non-industrial use while the greases are used primarily for machinery tools, or equipment.

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H. Barnes

H. Barnes

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H. Barnes
H. Barnes, Unemployed, Barnes, Atlanta

Answered Oct 13, 2020

It is true that you might have seen people referring to oil and grease as though they are the same thing. However, it is important that you know this is not true, as both are two different compounds. In fact, one of the common ways to differentiate between the two is by considering their physical state at room temperature.

When we talk about this, we are actually talking about how they look like at room temperature. At room temperature, grease is a semi-solid substance. In contrast, oil is a liquid substance at room temperature. Although, there are times you will see the oil as a solid substance, usually when it has been subjected to more cold temperatures.

The implication of this on the shape of the two compounds is that; grease will have a definite shape at room temperature, while oil will only assume the shape of the container. While oil can't be gotten as plant extract or from animal fat, grease can be obtained from minerals and also from animal fat.

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T. Wikati

T. Wikati

T. Wikati
T. Wikati, Technical Writer, New York

Answered Oct 11, 2020


Grease and oil are two types of lubricants. Different machines can use these lubricants, as well as tools.

The purpose of using them on tools and machines is to make sure that other items won't rub together.

They are related to each other, because oil is a component of grease. It also includes a thickener.

Although some grease is semi-solid, the is thickener is used to ensure the grease stays as a solid.

Between the two, grease will stay on longer than oil, but dependent on the machine or tool being used, oil may be the better thing to use.

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Daniel Drake

Daniel Drake

Daniel Drake
Daniel Drake

Answered Feb 19, 2020

Grease and oil are considered to be lubricants. These are used for different machines and tools that you may use. Grease is usually composed of oil and a thickener that will make sure that it will stay solid. Some grease may be in a semi-solid state depending on the type of items that are used to make it. Oil is known to be more liquid as compared to solid.

The goal of this is to ensure that the bearings and the other items that will move will not rub against each other. Grease will have the tendency to stay longer in one place than oil, but there is a time when one is needed more than the other. It would depend on what you are working on.

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