A rather unique SD40-2 of Colorado Southern vintage, 7840 along with 7149 were rebuilt as dual-fuel locomotives able to run with LNG or diesel and classed as DF40-2s, however, the 7890 is back to ... (more)

In 1990, Burlington Northern converted EMD SD40-2 No. 7890 to burn natural gas fuel as an experiment to lower fuel costs and get cleaner exhaust emissions. The rebuild included SD45-like flared ra... (more)

In 1990, Burlington Northern converted EMD SD40-2 No. 7890 to burn natural gas fuel as an experiment to lower fuel costs and get cleaner exhaust emissions. The work was performed at Coast Engine &... (more)