Abstract: A fuel oil additive is prepared by combining a mixture of diesel oil and camphor, with a mixture of petroleum oil and benzoic acid. Additional diesel oil and turpentine are added to the combination to form one component of the additive. Such component is combined with a second component comprising a combination of Turkey red oil and water to form the additive. The additive is subsequently combined with the fuel oil to be burned and water from a combustible product. Preferably, the product is aged before burning.