Hi Pam, yes, Steam Oil is a Strange name for the Coffee Ice Cream, allow me to share my understanding.
The Farm where we get the Ice Cream has been around since 1796. It is one of the Oldest continuously working Farms in the U.S. and has been in the same Family during that time, the Mitchell Family. Grandpa is in his 90's now, but several years ago, a Friend of his with a Train Museum asked Grandpa to make a "signature" flavor for his
Train Museum. Grandpa created Steam Oil Ice Cream and introduced Green Caramel to resemble the Oil in the Trains.
At least, that's how I heard it... JG