Cybermen again

[atomic1fire]

Perhaps you could have some easy to make rusting agent, which maybe changes the borg limb colors to a rusty red and slows cyberman and borgs down, rendering them easier to beat up. That could also give oil a purpose, since it would probably somehow fix them, rather then sit unused or get used to slip people.

I'm partial to water + salt shaker = borg fighting reagent, but I understand how dumb that sounds.