Using clean-burning fuels such as liquefied natural gas (LNG) are becoming more of an attractive option as they satisfy all emission requirements. Moreover, fluctuations in the fuel market make the plant owners reconsider their options when it comes to choosing the right fuel. Dual-fuel engines MAN 32/40DF, MAN 48/60DF, MAN L28/32DF, MAN L23/30DF, MAN L35/44DF, MAN 51/60DF, can simply switch between gas and liquid fuels which offer a great advantage when it comes to flattening the fuel expenditure curve and reducing emissions. The plant owners can additionally benefit from low operational and maintenance costs of these engines thanks to burning cleaner fuels which results in cleaner engine components.