Smoking Out Dodge City

I was at a family gathering about 20 years ago and recall Don Weiss and Harold Bradley telling stories.

They told of having an old Model T and had mounted an oil tank in the engine compartment and filled it with used motor oil. A copper line ran down to the exhaust manifold and they had a valve to control that line.
 

They would go to Dodge City and drive up and down Wyatt Earp Blvd and other streets and then turn on the valve so used oil dripped on the hot exhaust. They said the smoke was horrible and blacked out the whole town.
WHY? Because they were boys and it was funny. hah.

People would point and holler and they would just ride along like nothing was wrong.