Why is it necessary to change vehicle oil regularly, and not just change the filter and add new oil as needed?
In: Engineering
The filter just picks up solids, usually in the form of tiny specs of metal that occur from normal wear. These particulates just happen to be suspended in the oil, which makes it convenient to filter them out so they don’t cause any more problems.
The oil itself has a couple jobs, but the primary one is to lubricate the moving parts so it’s not metal on metal grinding. The oil also has additives that the internals of your engine like, and your engine will gobble them up during normal operation. Your oil also has detergents in it to keep things clean. Another lesser talked about function is that it does actually help with heat dispersion. All of these properties deteriorate over time. Oil that’s been heated and cooled back down many times loses some of its lubrication properties, the additives run low, and the detergents have run out. Eventually you need to replace it with fresh oil.
Latest Answers