In the past, I've run all my machines with seed oil from pumpkins in biogas engines. I just set up eight 9x9 pumpkin farms harvested by a single pumpkin harvester and cannot for all the effort in the world get a surplus of seed oil. The four engines powering the squeezers and harvester take every drop, and then some. Has seed oil been nerfed? If that's what this is, it's no longer a valid fuel in my eyes. When you can't get a surplus with four squeezers and so many pumpkin farms, it is practically worthless as a fuel.