My father was a ready mix plant operator. Along with that he owned 2 ready mix trucks that were rented out. Moving 1 of them from the completed job in Glendale to the just beginning job in San Diego I had the duty of following him in the pickup. 10 yd Freightliner half cab powered by a screaming V6-53 Detroit. Going through the hill country along about sunset I notice something a little odd. Sparks leaving the exhaust stack on a regular basis. Great, just what we need, little flying burning carbon particles in the brushy back country. I managed to get his attention and got him to take his foot out of it, sparks ceased. :realcrazy: