Increased petroleum prices, fast depletion of conventional fuel resources, stringent emission norms and increased environmental concern led to search for suitable alternative fuels for diesel engines. An oxygenated fuel is a chemical compound seems to be a possible source of alternative fuel received great attraction for diesel engines. In this work an experimental investigation is conducted to study the effect of di-methoxy methane blends with diesel fuel in a single cylinder four stroke naturally aspirated direct injection diesel engine. The engine was operated with diesel fuel and two levels of diesel/DMM blends: 6% and 12%.Blends were subjected to undergo engine performance and emission tests and the results were compared with diesel fuel. Results showed that, the addition of di-methoxy methane (DMM) blend to diesel fuel decreases the emissions of carbon monoxide (CO), hydrocarbon (HC) and smoke intensity. DMM blends slightly increases the specific energy consumption and nitrogen oxide emissions. From the test results it was found that the selected oxygenated fuel can be used for running the diesel engine successfully.