Please Conrail modelers. Conrail engines were always filthy. I called them the Southern Pacific of the East. Good weathering brings out the realism of these engines. Many articles have been done on the subject.
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A dusty but typical unit. During the late 1990s, nearly every train seemed to have an SD60I in it. One morning while at Wyomissing with several buddies and my son, we caught several trains. All had exclusive SD60I power. Now that was interesting the first train and maybe the second train.