Coal refinery that cracks excess heavy and light oils, maintaining sufficient heavy oil necessary to keep coal liquification running.
Outputs are water, petroleum, lubricant. Light oil freely be to tapped off to if desired else will be cracked.
Can extend refineries up to 30, if so increase other parts in approximate ratio of 6 refineries : 4 heavy oil cracking plants : 6 light oil cracking plants : 2 steam condenser : 1 Acid neutralization (steam generation)
You may wish to use https://factorioprints.com/view/-OCZvn_HtqvbD3zeWM2z instead and downgrade until you have beacons, modules and stack inserter research