Lubricating oil is widely used, many machinery will use lubricating oil, lubrication effect is very good, but lubricating oil in a long time is to be replaced, and there is a certain time when the lubricating oil will fail, what kind of effect, today we will talk about the causes of lubricating oil failure and the method of discrimination.

Cause of lubricating oil failure

1, viscosity index enhancer failure: because the long chain of organic molecules is broken, no longer has viscidity effect.

2, there are impurities: mainly from dust in the air, metal particles, leakage (fuel, water, etc.), lubricating oil oxides and fuel combustion substances.

3. Base oil failure: Base oil is the carrier of additives, and the additives will not play a role if base oil failure.

4, additive failure: some lubricating oil because of the additives failure or use up and performance decline. For example, when the antiwear agent in lubricating oil is used up, the antiwear will decrease.

5, high temperature impact: lubricating oil in a high temperature environment for a long time, oxidation failure, black, thickening phenomenon. The corrosion inside the lubricating oil increases, such as the acid formed in the engine operation. The increase of carbon, sludge, paint film and other substances.

Although there are standards to determine whether the engine oil change, but most owners or maintenance personnel change oil mainly based on the vehicle mileage/time (manufacturer regulations) and oil color and viscosity to judge. Judging from these ways alone is not necessarily completely correct. After all, there will be some differences in the color and viscosity of each brand of lubricating oil product, so the inspection must be handed over to professionals, especially the owners do not judge by themselves.