Should the Lingdong use 5w30 or 5w40?
2 Answers
Both types of oil are suitable for the Lingdong. Below is the relevant content introduction: 1. These two types of oil represent different viscosities of oil. The reason for using different oils in cars is mainly due to the different types of oil and their varying functions. 2. The number before the 'w' indicates the cold start performance of the engine oil. The lower the value before the 'w', the easier it is to start the engine in cold weather. The number after the 'w' represents the viscosity of the engine oil. Higher viscosity oils provide better protection for the engine. For oil used in cars, the higher the viscosity of the oil, the better the sealing performance of the oil. 3. During the process of driving a car, the higher the viscosity of the oil used, the less noise the engine produces during operation. There are three types of oil used in cars: mineral oil, semi-synthetic oil, and fully synthetic oil.
I remember driving a Hyundai whose maintenance manual clearly specified 5W30 oil, and I believe this is crucial. Automakers conduct tests to determine the optimal oil for their engines, and arbitrarily switching to 5W40 might be counterproductive. 5W30 offers better low-temperature fluidity, superior cold-start protection, and improved fuel efficiency. I used it for years with consistently smooth engine performance. In contrast, 5W40 is more viscous—it may provide extra protection in scorching summers, but if incompatible with engine design, it could increase mechanical stress and even shorten engine life. I've seen cases where forced use of high-viscosity oil caused clogging issues. I'd recommend checking your vehicle manual or consulting dealership technicians rather than risking penny-wise decisions. Like humans, cars thrive on proper nourishment for longevity.
