What do you know about the color of lubricating oil?

April 21, 2024

What do you know about the color of lubricating oil?

As ordinary lubricating oil users, we generally do not have the conditions for oil performance analysis, the most convenient and intuitive way is to observe the color and smell. Why are there obvious differences in the color of different types of lubricating oil? Why is the color of the oil different for the same model? Can you judge the quality of lubricating oil from the depth of color? Come and find out!

Affect the color of the lubricating oil

1. Base Oil

Different origin of crude oil, different refining technology will cause the difference in the color of the base oil.

2. Additives

According to the lubrication protection needs of different equipment, different lubricants should be added with different additives to achieve the best lubrication protection effect.

3. Dyeing agent

In order to act as a warning to distinguish other lubricants, a specific dye is added to some lubricants to change their original color; Sometimes to distinguish between different product lines. The dye will not have any effect on the performance of the oil.

You can generally judge the quality of the product by checking whether the color of the lubricating oil and grease is uniform.

If the color of the upper and lower layers of the lubricating oil is inconsistent and the color blocks are different, it means that the oil may have foreign contamination or expired deterioration during production and storage.

Normal color olive yellow

Represents the purest color of the lubricating oil, and is generally yellow when the lubricating oil is just replaced.

Warning color chili red

This is the role of dye, used to distinguish lubricating oil, such as some automatic transmission oil is red.

Problem color Premium grey

It means that the lubricating oil is in water, possibly due to internal leakage of the engine, causing the engine coolant to mix with the oil.

Problem color is bronzed black

In order to reduce the generation of high-temperature deposits in the engine, the lubricating oil will turn black after a period of time, but whether the oil is deteriorated also needs to be judged according to the viscosity of the oil.

The identification of lubricating oil quality is a very important thing, and it is necessary to develop the good habit of observing the oil gauge.

Oil replacement can not be sloppy, good quality oil can better protect the car.

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