What is 5w30 mineral oil?

5W30 mineral oil is a type of motor oil characterized by its viscosity ratings, where "5W" indicates its performance in cold temperatures (with the "W" standing for winter) and "30" denotes its viscosity at higher temperatures. It is derived from refined crude oil, making it a mineral oil, as opposed to synthetic oils. This oil is commonly used in vehicles, providing a balance of cold-start performance and protection at operating temperatures. It is suitable for a variety of engines, including those in cars and light trucks.