The worst case of engine smoking I have ever seen, working the West Slope at Cassandra, PA.
http://www.railpictures.net/viewphoto.php?id=126494
NS sprayed for them here in North Carolina in January...
http://www.railpictures.net/viewphoto.php?id=90600
Mr. Bell caught NS frying the bugs. When smokin' just won't do.
http://www.railpictures.net/viewphoto.php?id=40360
http://www.railpictures.net/viewphoto.php?id=40361
http://www.railpictures.net/viewphoto.php?id=40359