Find Frost Oil and bring it to Lotwil Veriatus in Badlands.
Let me tell you something about Frost Oil: nothing can keep an engine or gears from overheating quite like it.
Its cooling properties are extraordinary, and its longevity as a lubricant without equal. That's not all: it also aids in retaining enchantments on magical items.
I need a vial of it to increase the magical capacity of my shackles and make them powerful enough to stop our summoned friend from killing us all.
Bro'kin, a goblin friend of mine, can teach you to make it. He's in Alterac.