if you build the buildingthat turns humans t o oil, then go next turn, then destroy it, it still keeps the oil production. so building human to oil, then destroying it, ending turn building another humand to oil will allow you to have almost an unlimited amount of oil production. this i think causes the game to slow down eventually. so that might be the limnit. or the demand for oil might grow faster than you can accomidate it.
i beat the game
hehe im now Billionaire and im burning humans to get oil e_e
made it in tell 4090
I made it to 2270
survived till 2150