Is 0W or 5W engine oil better?

[DelEmily]

0W engine oil has higher quality requirements. Below is an introduction to the selection method of engine oil: Principles: The selection of engine oil is quite particular. Car owners can choose engine oil based on the local maximum and minimum temperatures, the vehicle's grade, and its condition. Differences between engine oils: If an engine oil with too high viscosity is selected, it will increase movement resistance and affect engine power; if an engine oil with too low viscosity is selected, it cannot guarantee lubrication quality and will exacerbate engine wear. How to choose: For engines that have experienced significant wear and have larger component clearances, a higher viscosity grade of engine oil can be selected to enhance the sealing performance of the components. Simply put, it is better to choose thinner oil for new cars and thicker oil for cars with higher mileage.