- Were you looking for general info on substances called oils?
Oil is a currency first introduced in Patch 6.2 used to start naval missions (unlike most missions which use
[Garrison Resources]). They are collected by the player in order to maintain their garrison Shipyard and build ships. Oil is primarily gathered as quest rewards and mission rewards.
Source
- ...
- Quests
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Patch changes
Patch 6.2.0 (23-Jun-2015): Added.