Oil is a resource used for Smelting and running Mining Machines. At the start of the game, you have an oil income of 0, which you can increase by crafting the Oil Well. When you use oil for smelting, it is all consumed at once, while if you have machinery running it is consumed per second.
If you run out of oil while mining, all mining machinery will be switched off. However, you can configure the Miner to automatically switch on a specific set of machines if this happens, after crafting the Wrench.
Oil Wells are the primary method of obtaining oil and can be built with the Crafting skill.
|Oil Well||Level||Materials||Oil Rate|
|Bronze Oil Well||1||5||1 per second|
|Iron Oil Well||23||25||5 per second|
|Silver Oil Well||30||200||10 per second|
|Gold Oil Well||43||500||20 per second|
|Promethium Oil Well||56||40||35 per second|
Note: that these effects do not add up cumulatively but instead each oil well overrides its predecessor. This means that you will gain just 10 per second with the Silver Well, instead of 16 per second (as was the case in DH2).
Oil Well Orb
The Blue Oil Well Orb will permanently give double the amount of oil from any oil well. This makes the current maximum permanent oil rate 90 oil/second, from a Blue Oil Orb with a Promethium Oil Well and a full Oil Factory and Promethium Oil Factory.
Oil Factories are an additional source of oil production which can only be built after obtaining the relevant Oil Factory Blueprint. After building the factory, up to 10 workers per factory can be hired for 10,000 , each of which will provide 1 oil/second.
|Oil Factory||55|| 1,000, 500,
|Up to 10 per second|
|Promethium Oil Factory||64||120, 1||Up to 10 per second|
|Titanium Oil Factory||72||30, 1||Up to 10 per second|
A maximum amount of oil can be stored, which can be increased by building Oil Storage with the Crafting skill. Up to Oil Storage V can be currently crafted, to store a maximum of 600,000 oil at one time.
The Oil Potion can be brewed with 13 Brewing using a vial, 4 dotted green leafs, and 1 oil. It gives +10 oil/s for a base time of 30 minutes, which can be extended up to 60 minutes with the Diamond Brewing Kit.