Nowadays, increasing crude oil prices and environmental pollution problems have lead to investigation of alternative fuel necessities, such as vegetable oils for internal combustion engines. This article presents the possibility of using cottonseed oil-kerosene blends in compression ignition engines. Engine performance and exhaust emissions were examined and diesel fuel was used as a basis for comparison. The influences of using various blended cottonseed oil-kerosenes on brake specific fuel consumption, exhaust gas temperature, and exhaust emissions values were investigated. Experimental results indicated that engine performance and brake specific fuel consumption were slightly different and SOx emissions were remarkably different from diesel fuel usage.