Essence for the Engines

Objectives
Collect 7 Mana Wraith Essences and return them to Chief Engineer Trep at Area 52 in the Netherstorm.
 * Mana Wraith Essence (7)

Description
As the X-52's chief of engineering, I have to see to it that the nether-rocket's main engines are in tip-top shape. Unfortunately, I haven't built them yet. &lt;class&gt;, I'm in dire straits here! I have almost all of the parts. All that I'm missing is the engine core. Luckily for us, I think we can make use of the essence from the local mana wraiths to jump-start the engines. They can be found near most of the glowing trenches in the northern part of the island. Except for here in Area 52, of course.

Reward
You will receive:

Progress
You have all of those essences yet?

Completion
Wow, that's a lot of essence! Ok, let's see what happens when I mix it with the etherlithium matrix crystals.

Gains
Upon completion of this quest you will gain:
 * 12000 XP (or at level 70)

Progression

 * 1) Report to Engineering
 * 2) Essence for the Engines
 * 3) Elemental Power Extraction