Aging? This unit might be 20 years old, give or take. A lot of the SD-40-2Ns are approaching 50 years old.
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The UP 70M fleet has largely been in local/yard service for the last 5 years. In many cases, they have replaced the SD40Ns in that service. Since they’re not DPU equipped, they have had a shorter shelf life as road power compared to other generations before and after.
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