Hi All,
Played it back and yes, I have seen it on TV. I don't see that much black smoke coming from a diesel even on Cajon Pass, CA with a dozen engines on the point and 150+ loaded cars in tow. Cajon Pass has a continuou 3+ percent grade. That is real mountain railroading.
Metrolink and Amtrak are rather sensitive to such things on their engines. Accordingly, the EMD F-59's both PH and PHI, have been praised by the EPA for their clean exhausts and non-polluting the environment. I believe they once stated that these engines were cleaner than the 18 wheelers on the freeways.