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Old 04-13-2012, 09:36 PM   #14
its a syn
B.O.D. 02/16/10
 
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Drives: Longest things on Earth
Join Date: Jun 2010
Location: Albia,Iowa
Posts: 3,958
It is the brake dust from the auto racks. They have the smallest wheels of any rail car and therefore heat up more than most of any other rail cars. Also engineers tend to use more air when breaking on an auto train than the perferred method of using dynamic braking. Those auto trains are like one big slinky, so using air keeps them streached rather than bunched. Talk to Adam's and see what they recommed for brake dust, because thats what you have.
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