MAN Energy Solutions has announced that its MAN 51/60DF engine has passed the milestone of 10 million operational hours. The company states that, since its market entry, the dual-fuel engine has proved extremely popular with 310 engines currently in service – an increase of almost 100 units since 2022.

The 51/60DF engine, which can run on a wide variety of fuels including natural gas, biogas, bio-fuel, synthetic fuels, distillates and heavy fuel oil, has been in MAN Energy Solutions’ portfolio since 2009. It comes in various power classes from 6.3 to 20.7 MW and is serviced by MAN PrimeServ, MAN Energy Solutions’ after-sales division, on five continents.

Stefan Eefting, Head of MAN PrimeServ Germany, said: “This is a significant milestone that stands testimony to the character of this engine. The 51/60DF has become a fixture in shipping and power-plant operation and stands for absolute reliability – even in high ambient temperatures. Switching between the different fuels happens more or less at the touch of a button and is possible at any point between 0 and 100% load without any loss of power or frequency shift.”