Can engine oil still be used if water gets into it?

1 Answers
DeLouis
07/30/25 6:40am
Engine oil cannot be used if water gets into it. When engine oil contains excessive water, its performance will decline. Under certain conditions, excessive water can reduce or even nullify the effectiveness of certain additives in the oil, disrupt the oil's viscosity, and prevent the formation of a proper lubrication film on the friction pairs, leading to mechanical damage or even failure. Here is some information about engine oil: 1. Types: Engine oil is divided into three types: full synthetic oil, semi-synthetic oil, and mineral oil. 2. Oil grades: The packaging of engine oil usually displays codes such as 5w30, 0w20, or 5w40, which indicate the oil's grade. The "w" stands for winter, meaning the oil can be used in winter if it has the letter "w" in its grade.
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