I did a brief Forum search and was surprised that I did not find this topic.
Speaking of model railroading enabling us to appreciate something most others don't, whenever I run this engine with oil tankers, I imagine smelling the stinking oil refineries while driving along the NJ Turnpike.
@Arnold D. Cribari
Arnold:
While I was finishing my undergraduate degree, I made round nightly round trips from Baltimore to Bayonne. I was a tractor trailer driver for Englander Matress. The plant was on Avenue E. 5 nights a week, I passed said refineries twice. and remember the aroma only too well.
My nightly runs were very aromatic. I drove a Mack tractor. The exhaust from the Mack had quite an odor. Also, crossing the Delaware Memorial Bridge, I was greeted on the Jersey side by Dupont Chemicals. There was a different smell every night. At least that added variety. Initially, we did not have license to go through Staten Island, so, we took exit 14 and came into Bayonne on Avenue A from which, every night, I saw the back of the Statue of Liberty.
I realize this dissertation has zero to do with model railroading. Your comment above stirred lots of memories from another life.
P.S.: If you want to add the scent dimension to your oil train, load the smoke unit in your Trainmaster with Mega-Steam, "Diesel Exhaust". I was a Mega Steam dealer at one time and stocked that scent. It is beyond me as to why anyone would want to make their train room smell like the butt end of a transit bus.