YANMAR offers a dual fuel solution, the medium speed 1533kW 6EY26DF, for situations where very low emissions are needed with no sacrifice in power output. Designed for operation on either diesel fuel or liquefied natural gas (LNG), emissions of sulphur oxides (SOx) and particulate matter are cut by 99% when running on LNG, while nitrogen oxides (NOx) are reduced by 85%, and CO2 by 20% to 25%. It is possible to switch between gas and liquid fuels even under full engine loads, while air-fuel ratios are automatically adjusted for optimum operation under different load fluctuations and methane concentrations.