Lifeblood One of the most important things you can do for your car, and one of the simplest things, is to change your car s oil regularly.
Oil plays a vital role.
It must withstand blistering temperatures inside the engine. This intense temperature is the cause of oil viscosity breaking down. As oil viscosity begins to break down, so do additives. Once the additives and detergents break down, they can no longer protect your engine from contaminants and moisture. Conditions inside the engine aren t the whole story.