Can different brands of engine oil be added when the car is low on oil?

1 Answers
DelKendra
07/24/25 11:54pm
When the car is low on engine oil, different brands of oil should not be added. Reasons why engine oils cannot be mixed: Different brands and grades of engine oil are formulated with various additives based on the working characteristics and environmental requirements of different engines. This results in differences in viscosity, anti-wear properties, anti-corrosion properties, anti-knock properties, and volatility. Mixing them may degrade the oil's performance and even cause damage to the engine. Precautions for using engine oil: It is best to avoid mixing different brands of engine oil. In emergency situations, mixing can be done temporarily, but it is advisable to use oils of similar types and the same viscosity. After mixing different brands of oil, it is essential to appropriately shorten the maintenance interval. Since different brands and models of oil contain different additives, they may react with each other, leading to various issues.
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