You could always build an engine controller, which will let you turn the engine on/off either manually or with redstone signal.
Anyway, it isn't mentioned often, but leaves produce a lot of ethanol crystals. If you have some mechanism for shearing leaves or even just do it manually, you'll be swimming in ethanol before you know it.
Anyway, it isn't mentioned often, but leaves produce a lot of ethanol crystals. If you have some mechanism for shearing leaves or even just do it manually, you'll be swimming in ethanol before you know it.