Hmmm... No liquid to liquid oil coolers on these machines:...
View attachment 1129633
every one of those machines has a liquid to liquid oil cooler built into the engine. Idk what you think you're trying to prove, but you're most certainly wrong about oil pan being much of any cooling factor in liquid cooled engines.
You don't really think I just grabbed pictures off the internet and posted them, do you? That is a Deutz air cooled engine in a Deutz-Allis tractor.
https://www.tractordata.com/farm-tractors/003/1/7/3176-deutz-allis-9190-engine.html
Do you really want me to prove that the other machines have an air cooled engine in them too?
Now can we all stop looking for stuff to argue about, and perhaps focus on learning about what is going on and how stuff works?