That sounds dead right charlsey, and theres little argument: TVO tractor vapourising oil, is there.
I think they put something else in, unless I'm getting mixed up I recall a smell of victory v's from tvo, maybe a little ether just to help ignition.
In an earlier post I said some tractors started on tvo and ran on diesel, well its that long sin I might have got that screwy, its more likely they were started on petrol and then switched to tvo, makes more sence, and complies with what you say charlsey.
If theres a leyland type tvo tractor engine, theres a possibility if you can get one of fitting the fanimold to the 2 1/4.