How long can car oil be kept?

How to judge whether automobile lubricating oil has expired? In the following inspection, we will find that under normal conditions, lubricating oil should be clear, translucent or transparent liquid. If the oil oxidizes, the color will change. In addition, the transparency of the lubricating oil decreases, illustrating the change of the oil quality of the lubricating oil. If the smell of lubricating oil sour, smelly, have been clarified decay. In addition, if the viscosity of oil can be observed to change significantly (thinning, thickening), uneven properties, should not be used.

1 variety of lubricating oil

After a long time of storage, lubricants with mixed additives are more simple to present problems. For example, car engine lubricating oil (oil), if the additive is used more, then in a long time after storage, the additive properties change, the possibility of separation is relatively large. If the additive composition of lubricating oil is relatively simple, such as anti-oxygen anti-rust lubricating oil, the risk of separation of additives is relatively small after long-term storage.

2 Storage conditions of lubricating oil

The main reasons for the formation of lubricating oil decay are: whether it is sealed, whether it is cool and dry, air oxidation, high temperature, oil pollution (any substance other than lubricating oil is attributed to impurities, including dust, water and so on), sun exposure. If these conditions appear in the storage process of lubricating oil, the deterioration rate of oil will be significantly accelerated.

How long does the lubricating oil exceed the shelf life

How long is the storage time of lubricating oil? A month or two beyond the shelf life must be very different from a year or two beyond the shelf life. Secondly, where is lubricating oil used? Is the machine that uses the oil important? If there is a failure, will there be a major loss?

Generally speaking, the storage time of industrial lubricating oil is advocated within 1 year, and the grease is within half a year. In order to ensure excellent equipment lubrication, lubricating oil should follow the "first in, first out" in storage to prevent lubricating oil from being stored for a long time. The above method only qualitatively evaluates the oil quality of lubricating oil after storage. If the amount of oil in the lubricating oil is large and you do not want to spoil it, it is better to do oil detection (oil analysis) before using the lubricating oil beyond the shelf life. Oil detection through professional detection equipment, can quantitatively determine the oil quality of lubricating oil.