Wondering how to best clean a commercial deep fryer? The secret to extending the life of your oil is a “down to the metal clean” each time you do an oil change. That way, when you add new oil, there is no leftover residue coating the sides and bottom of your commercial deep fryer. When heated, this residue can release oil life, reducing particles that can deteriorate the quality of the oil and the food it cooks. Especially effective for operations using newer zero trans fat oils where oil savings of 50%.