I cant see those oxidizers lasting long. Those things burn oil when they idle, and they idle a lot. I'l try to get a picture of the smoke in the air from all the idling locomotives. On those particular locomotives EMD recomends only changing the engine oil once a year. The thought is that they burn enough oil that it's always being changed. it's not at all uncommon to ad 50 gallons of oil to the crankcase when they get fueled up.