Ah there we go. I just completely missed that UI element, and was used to finding the liquids in the resource menu intermixed with everything else.

Thank you.

Apologies if this is a dumb question. I literally might be overlooking a UI element here.

I'm transporting oil with fluid wagons to a refinery. I want to tell my train, "Leave the station when you have more than 2k crude oil", but as far as I can tell, I can't. Crude oil isn't a resource option in ...