Will the PetroSavers Engine Oil Refiner keep oil from turning dark?
Oil may turn dark from the action of heat on some additives. This color change does not affect additive function; however, because of this, color is not a good indicator of oil’s lubricating quality. Although the PetroSavers Engine Oil Refiner does not prevent color change, it does remove any harmful contaminants that would contribute to a color change.