We can provide various Magnetic Oil Saver for improving the combustion , fuel oil boilers from appliance boilers to heat power boilers (home or industrial heating), various combustion furnaces, and internal combustion engines in automobiles (two-cycle and four-cycle, diesel and gasoline), trucks, ships and jets, where the fuel employed is liquid or gaseous hydrofuels, such as oil, gas, natural gas, propane, kerosene, gasonline, fuel oil, butane, ect. Applying a magnetic field to ionizing fuel to be fed to combustion devices we can ensure more complete combustion, obtaining a maximization of the fuel economy, improving the fuel efficiency and reducing polluting emissions. The magnetic field strength must be at a higher surface Gauss level (3000-10000GS), decreases 5%-20% the burning of oil, protect the environment by reducing pollution 30%-90%, it is installed outside the pipe and maintenance free.