Oil doesn't last forever. Excessive use or improper care can lead to the breakdown of oil and darkening of products/loss of proper taste. Nobody likes chicken or fries cooked in old oil. Fryer Filters remove and filter the gunk out of oil, pumping it back in fresh and free of broken down carbon and cooked product debris. Using one of the models below can add a week of life to the most heavily used oil, saving you thousands in annual oil costs.