In order to allow as much heavy oil being refined I am storing excess petroleum and light oil. For this question, lets assume strictly petroleum.
The wiki recommends creating solid fuel. But I don't agree because of this simple math:
petroleum barrels: 250 per barrel, 10 per stack = 2500 units per stack petroleum solid fuel: 20 per block, 50 per stack = 1000 units per stack
Am I wrong? Or am I missing something?