As the Wrench Turns | Wasteland missions Mad Max Guide

You will unlock this mission after completing the Immortal Enemy story mission and going to Deep Friah's Temple.

A lone enemy and chest with the upgrade awaits at the end.

Drive to the Scavenging location marked by Chum. Inside you will find 8x Scrap and a History relic. In the next parts of the small underground you will be attacked by few groups consisting of 2-3 enemies. They aren't armed, defeating them will be easy. At the end of the road you will find a single opponent and the main objective of this mission. Collecting the upgrade will unlock the ability to quickly repair the Magnum Opus vehicle.