Abstract: Diesel engines are used around the globe in many transportation and power production activities. These engines consume large amounts of fuel and produce many dangerous pollutants. If we add to this all, the coming day for the depletion of oil, all these things together require consideration of alternatives to reduce the consumption of diesel oil and its pollutants. In this study, we navigate through the scientific research space and review the latest findings of science in this regard. There are substitutes for diesel, including fully compensated, or mixing with it to reduce pollutants. All these alternatives have their positives and negatives. To this day, diesel fuel is still dominating the ignition engines and has not yet achieved a competitive advantage in terms of combustion efficiency.