I think K-Line made a Amoco tank car like the Chevron above. I repainted a K-Line tank car to Amoco years ago. The Amoco tank car will have AMOX plus the car number.
I also have a Amoco Chemical covered hopper car for plastics made by Weaver.
Also a Amoco tank farm and a oil well and gas well.
Can not find pictures of the tank car or Hopper car. Worked 30 years for Amoco/BP, they paid for all of my trains.