u Fuel additives provides an increase on engine performance and a reduction in the amount of the exhaust emissions as a result of improving fuel properties and combustion efficiency of internal combustion engines. In this experimental study, it is investigated the effect of using titanium (diizopropoksit bis) as a fuel additive on diesel engine and emissions. Titanium fuel additive and diesel fuel (D) were mixed with 25, 50, 75, 100 ppm values. In order to determine the performance and exhaust emissions characteristics, a single cylinder diesel engine was fuelled with blended fuels and tested at full load conditions. In conclusion, engine torques and power values of blended fuels were found to have similar values of diesel while specific fuel consumption values decreased. The use of titanium as a fuel additive has led to significant reductions in engine emissions. In particular, CO and soot emissions decreased up to 64.56% and 45.19% respectively.