A quick look at Delta Yard yesterday afternoon, resulted in capturing BNSF Dash8-40CW #874
As you can see very shabby condition. May push the CP AC4400CW of the contender list.
I remember getting #812 crashing over the diamonds at Jolliet Ill, brand new running York Canyon coal trains, back in 1992. Just goes to show what 20 odd years of grime and punishment can do to a locomotive.