What is the best engine oil for all seasons?
2 Answers
There are various types of all-season engine oils, such as 5W40, 5W30, 5W20, 0W40, 0W30, and 0W20. The actual choice of which type of engine oil to use should be based on factors such as the vehicle model, driving environment, and the owner's driving habits. For Japanese cars: They tend to prefer using 0W20 or 5W20 engine oils, mainly because their engine structures are compact and require lower viscosity oil. For German cars: German cars, on the other hand, require the use of engine oils such as 5W40 or 0W40, also due to the internal structure of their engines.
As an auto mechanic, I believe the key to all-season motor oil lies in choosing multi-viscosity grades like 5W-30 or 0W-20. The first number '5W' indicates excellent low-temperature performance, ensuring smooth cold-weather starts without hesitation; the latter number '30' refers to sufficient high-temperature viscosity, protecting engine components from wear during summer heat. This single oil can handle all seasons, saving me the hassle of seasonal oil changes at the shop. I also help car owners check for API certification marks to ensure oil quality. Using the right oil extends engine life, preventing winter startup delays or summer oil-thinning warning lights. I recommend checking oil levels every 5,000 km and adjusting change intervals based on driving habits - highway-heavy driving may allow slightly longer intervals. Neglecting proper oil selection increases repair risks and could damage critical engine components.
