how much smoke comes out of there

 

you can't really consider it smoke, more like crankcase vapors
it's hardly visible during daylight.
the vapors are seen mostly at night in the winter at a stoplight...... even with the bottle in the original location

 

well that is true. and does it just look like some steam coming out under the truck or what???

 

Yep steam just like an over the road rig, next time you guys are at a light next to a Peterbilt look under it. I bet you a donut you'll see the vapors.