Maybe so, but I can't recall having to hold my breath when driving behind a gasoline powered vehicle like I do when behind a diesel. That exhaust crap just makes my eyes water. Certainly can't be all that good to be getting into my lungs, either. :nonod: So tell me, what exactly IS the composition of all that black smoke?
That "black smoke" is just unburned fuel Rich. Whatever is the composition of diesel fuel is in that smoke.
I'm not sure why you're seeing that much smoke behing a (passenger) diesel truck Rich?
The newer "clean diesel technology, combined with cleaner non-sulfide fuels, create little to no smoke under normal engine operation.
I'm in traffic almost daily and I seldom see "smoke" from the diesel trucks.
Of course, I'm talking about mainly the F-250-350's-Dodge Rams and Chevys.) either at idle or when travelling down the road.
If the vehicle is modified, the emissions systems tampered with or not working properly, or if they're under a heavy load, then you will likely see some momentary smoke, but it's generally just that, momentary, then it's gone.
It's much the same as mashing the throttle on the Vette. Generally, you'll see see a momentary puff of smoke, then it's gone:thumbsup:
There are some applications that some will buy to create smoke, but frankly, I wouldn't want one.
As far as smokescreens, apparently you haven't driven behind some of the clunkers I have.:toetap05::toetap05:
Just the other day I was behind this old POS buick on the INTERSTATE of all places! The SOB threw out so much smoke, you couldn't see the back of the car. I really thought the thing was on fire from a distance. As I got closer, I could smell the oil:thumbsdown:
The guy drove right by a deputy, without so much as a look
You still hear the Dodges "rattle" but the Fords and Chebbys are pretty quiet these days:thumbsup: