Well, realistically, the charcoal leftovers from the wood heating is not even nearly the same thing as the mined coal. And from the gameplay perspective, petroleum+coal as output just deteriorates logistic puzzle for the plastic production. And crude+petroleum? You keep jiggling around the simple straight recipe "wood->crude" forgetting what Occam said.
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You are in charge, mr FuryoftheStars, but IMHO, qualitatively, the basic recipe should be just "wood->crude" and the advanced is "wood+acid->crude". Cuz Occam, you know.
![Smile :)](./images/smilies/icon_e_smile.gif)
As for the quantities... Well, the basic should not be as efficient as advanced - otherwise why bother with an addition of acid, right? And since the advanced yelds 58% eff (by fuel energy value{1Wood=2MJ,1Crude~1MJ}, I suppose?), than the basic one should be even less efficient than that. I suggest to turn off for a moment our common OCD problems with precise math and do it rough, at least for the start. It is always possible to update the mod with number tweaks without braking anyone's game, right?
So here is my proposal for the recipes:
Basic: 2Wood -> 1Crude (0.5sec);
Advanced: 5Wood + 5Acid -> 6Crude (1 sec).
The quantitative tweaks are up to you, of course, but in case OCD will not let you sleep again, let me make it worse: the production of sulfuric acid involves sulfur coming from gas, which also has fuel value. Plus energy consumption of the machines... And those are game-set values, which have nothing to do with reality... You know what I mean? Don't try to dig too much into this mess, total realism is not possible anyway.
![Wink ;)](./images/smilies/icon_e_wink.gif)
I hope you will not get in circles again!
![Smile :)](./images/smilies/icon_e_smile.gif)