Oil Storage

Description
''Oil Storage keeps oil on reserve until it's needed. Upgrading Oil Storage increases the amount of barrels it can store.''

Upgrade Progression
Total Time: 38hrs 9min 4sec (1 day 14 hrs 9 min and 4 sec)Total Resources:

Metal: 7,381,000

Oil: 7,381,000

Total capacity: 9,000,000 Oil.