Most of today's car engines use fossil based fuels which is estimated to run out in a period of 50-60 years. Scientists are also researching ways to improve the performance of existing fuels and reduce emissions to the environment on the one hand while trying to provide an alternative to petroleum-based fuels on the other hand. They come from gasoline and diesel fuels to reduce harmful emissions to the environment and one of the most studied subjects of increasing fuel efficiency values.In this study, boron additives were added to petroleum based fuel and used in a gasoline-powered internal combustion engine in order to investigate their effects on engine fuel temperature, fuel consumption, engine performance as well as emission levels. Experimental studies were conducted in the laboratory by using a gas powered internal combustion engine (Lombardini LGW 523) operated at 1500 rev/min – 5000 rev/min to determine whether there are any changes in terms of increased engine performance (power, torque and fuel consumption) and low levels in emissions (HC, CO, CO2, and O2)