ADDO is an additive based on a mixture of nanodiamond and nanographite that is produced via detonation synthesis. Testing showed that ADDO improves engine performance by reducing friction and wear while also improving fuel economy. Specifically, tests found that ADDO can decrease engine wear by up to 73%, increase fuel economy by 3-17%, and reduce toxic exhaust emissions. ADDO also helps maintain oil quality for longer, increasing the lifetime of motor oil by up to four times.