Your car's engine's oil filter keeps it clean over time and helps with impurities that may accumulate over time. It is possible that, if left unfiltered for a while, the oil would become laden with microscopic, hard particles that could wear down engine surfaces, which is why clean motor oil is required. It is a good idea to get the oil filter changed every time you change the oil. This product ensures that the oil in your engine is free of larger contaminants, and replacing it concurrently with an oil change ensures that everything will function properly.