Basic oil processing only generates Heavy oil (40 Heavy from 100 Crude). Simple but inefficient, with cracking to obtain light oil and gas on demand. Also moves solid fuel to Flammables.
I really hope the vanila game goes this way instead of just petrol, personaly i'd would have added a line of 1 water to reserve the water inputs. since a input of 0 doens't work tried that.
I've got a partial model mod in the works to make chemical science line up with this mod, by changing it to solid fuel, electric engine, and red wire or something along those lines. I'd post it tonight but haven't sorted through the effects on the tech dependencies.