| Petroleum gas
Internal name: petroleum-gas
Prototype type: fluid
Petroleum gas is a gas converted from crude oil (in an oil refinery) or light oil (in a chemical plant). Petroleum gas is used to create plastic bars and sulfur, important ingredients for mid-to-high-level recipes.
Petroleum gas can also be used to create solid fuel, but the ratio of fuel created is not as efficient as that of light oil, and petroleum gas is usually too valuable to waste.
|Oil refinery||Basic oil processing||+ => + ( )|
|Oil refinery||Advanced oil processing||+ + => + ( )|
|Chemical plant||Light oil cracking||+ + =>|
|Oil refinery||Coal liquefaction||+ + + => + ( + )|