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	<id>https://wiki.factorio.com/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Bjthinks</id>
	<title>Official Factorio Wiki - User contributions [en]</title>
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	<updated>2026-05-17T04:53:01Z</updated>
	<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://wiki.factorio.com/index.php?title=Engine_unit&amp;diff=138177</id>
		<title>Engine unit</title>
		<link rel="alternate" type="text/html" href="https://wiki.factorio.com/index.php?title=Engine_unit&amp;diff=138177"/>
		<updated>2017-05-23T20:13:13Z</updated>

		<summary type="html">&lt;p&gt;Bjthinks: Update optimal ratio for 0.15&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Languages}}&lt;br /&gt;
{{:Engine unit/infobox}}&lt;br /&gt;
&lt;br /&gt;
An &#039;&#039;&#039;Engine unit&#039;&#039;&#039; is used for building various vehicles, such as [[Diesel_locomotive|trains]] and [[Car|cars]]. This variant burns fuel to run, but there&#039;s also an [[Electric engine unit]].&lt;br /&gt;
&lt;br /&gt;
Optimized time/item usage: 2 [[Pipe]] factory + 1 [[Iron gear wheel]] factory &amp;amp;rarr; 20 Engine unit factories, as of version 0.15.&lt;br /&gt;
&lt;br /&gt;
Since 0.15.0, engines are also required as an ingredient in the [[Science pack 3]] recipe. &lt;br /&gt;
&lt;br /&gt;
== History ==&lt;br /&gt;
&lt;br /&gt;
{{history|0.15.0|&lt;br /&gt;
* Crafting time changed from 20 to 10.}}&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[Electric engine unit]]&lt;br /&gt;
* [[Diesel locomotive]]&lt;br /&gt;
* [[Car]]&lt;br /&gt;
* [[Tank]]&lt;br /&gt;
&lt;br /&gt;
{{IntermediateNav}}&lt;/div&gt;</summary>
		<author><name>Bjthinks</name></author>
	</entry>
	<entry>
		<id>https://wiki.factorio.com/index.php?title=Engine_unit&amp;diff=137426</id>
		<title>Engine unit</title>
		<link rel="alternate" type="text/html" href="https://wiki.factorio.com/index.php?title=Engine_unit&amp;diff=137426"/>
		<updated>2017-05-13T22:34:10Z</updated>

		<summary type="html">&lt;p&gt;Bjthinks: Explicitly document the change in crafting time as of 0.15.0&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Languages}}&lt;br /&gt;
{{:Engine unit/infobox}}&lt;br /&gt;
&lt;br /&gt;
An &#039;&#039;&#039;Engine unit&#039;&#039;&#039; is used for building various vehicles, such as [[Diesel_locomotive|trains]] and [[Car|cars]]. This variant burns fuel to run, but there&#039;s also an [[Electric engine unit]].&lt;br /&gt;
&lt;br /&gt;
Optimized time/item usage: 2 [[Pipe]] factory + 1 [[Iron gear wheel]] factory &amp;amp;rarr; 40 Engine unit factories. &lt;br /&gt;
&lt;br /&gt;
Since 0.15.0, engines are also required as an ingredient in the [[Science pack 3]] recipe. &lt;br /&gt;
&lt;br /&gt;
== History ==&lt;br /&gt;
&lt;br /&gt;
{{history|0.15.0|&lt;br /&gt;
* Crafting time changed from 20 to 10.}}&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[Electric engine unit]]&lt;br /&gt;
* [[Diesel locomotive]]&lt;br /&gt;
* [[Car]]&lt;br /&gt;
* [[Tank]]&lt;br /&gt;
&lt;br /&gt;
{{IntermediateNav}}&lt;/div&gt;</summary>
		<author><name>Bjthinks</name></author>
	</entry>
	<entry>
		<id>https://wiki.factorio.com/index.php?title=Sulfuric_acid&amp;diff=135590</id>
		<title>Sulfuric acid</title>
		<link rel="alternate" type="text/html" href="https://wiki.factorio.com/index.php?title=Sulfuric_acid&amp;diff=135590"/>
		<updated>2017-04-07T21:00:17Z</updated>

		<summary type="html">&lt;p&gt;Bjthinks: /* Optimal Ratio */  Added data for downstream ratios (battery &amp;amp; PU)&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{languages}}&lt;br /&gt;
{{:Sulfuric acid/infobox}}&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Sulfuric Acid&#039;&#039;&#039; is a [[Liquid]] that is used to create [[Batteries]] and [[Processing unit]]s. It is converted, by the [[Chemical plant]], from [[Sulfur]], [[Water]], and [[Iron plate]]s.&lt;br /&gt;
&lt;br /&gt;
==Optimal Ratio==&lt;br /&gt;
The optimal ratio for Sulfuric Acid production is two Sulfuric acid Chemical plants for every five Sulfur Chemical plants.&lt;br /&gt;
&lt;br /&gt;
Two Sulfuric acid Chemical plants produce enough Sulfuric acid for 25 Battery Chemical plants, or for 300 Processing unit assemblers (if Assembler 3 is used).&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[Liquid network]]&lt;br /&gt;
* [[Oil processing]]&lt;br /&gt;
&lt;br /&gt;
{{IntermediateNav}}&lt;/div&gt;</summary>
		<author><name>Bjthinks</name></author>
	</entry>
	<entry>
		<id>https://wiki.factorio.com/index.php?title=Barrel&amp;diff=135585</id>
		<title>Barrel</title>
		<link rel="alternate" type="text/html" href="https://wiki.factorio.com/index.php?title=Barrel&amp;diff=135585"/>
		<updated>2017-04-07T08:18:47Z</updated>

		<summary type="html">&lt;p&gt;Bjthinks: Add barrel stack size and calculate cargo wagon oil capacity&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Languages}}&lt;br /&gt;
&#039;&#039;&#039;Barrels&#039;&#039;&#039; can be used to store and transport 25 units of [[Crude oil]]. Since they are solid objects, they can be used as an alternative to pipes, once [[Fluid handling]] is researched.  The barrels themselves are reusable once the oil is drained.&lt;br /&gt;
&lt;br /&gt;
Barrels stack in groups of 10. A single [[Cargo wagon]] can hold 400 barrels, which gives a capacity of 10,000 Crude oil per Cargo wagon.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Empty Barrels ==&lt;br /&gt;
&#039;&#039;&#039;Empty Barrels&#039;&#039;&#039; can be crafted.  When Crude Oil Barrels are emptied, the (required) [[Assembling machine]] will also return an Empty Barrel.&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
| &#039;&#039;&#039;Recipe:&#039;&#039;&#039; || {{icon|steel-plate|1|Steel plate}} + {{icon|time icon|1|time}} =&amp;gt; {{icon|barrel-empty|1|Empty barrel}}&lt;br /&gt;
|-&lt;br /&gt;
| &#039;&#039;&#039;Req. technology:&#039;&#039;&#039; || {{icontech|fluid-handling||Fluid handling}} [[Fluid handling]]&lt;br /&gt;
|-&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{|class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Process !! Input !! Machine !! Output&lt;br /&gt;
|-&lt;br /&gt;
| {{imagelink|empty-crude-oil-barrel|Empty crude oil barrel}} || {{icon|crude-oil-barrel|1|Crude oil barrel}} {{icon|time icon|1|Time}} || {{icon|assembling-machine-2||Assembling machine 2}} or {{icon|assembling-machine-3||Assembling machine 3}} || {{icon|barrel-empty|1|Empty barrel}} + {{icon|crude-oil|25|Crude Oil}}&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
== Crude Oil Barrels ==&lt;br /&gt;
&#039;&#039;&#039;Crude Oil Barrels&#039;&#039;&#039; cannot be crafted.  They are filled in the &#039;&#039;&#039;Fill crude oil barrel&#039;&#039;&#039; process which consumes Empty Barrels.&lt;br /&gt;
&lt;br /&gt;
{|class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Process !! Input !! Machine !! Output&lt;br /&gt;
|-&lt;br /&gt;
| {{imagelink|fill-crude-oil-barrel|Fill crude oil barrel}} || {{icon|barrel-empty|1|Empty barrel}} {{icon|crude-oil|25|Crude Oil}} {{icon|time icon|1|Time}} || {{icon|assembling-machine-2||Assembling machine 2}} or {{icon|assembling-machine-3||Assembling machine 3}} || {{icon|crude-oil-barrel|1|Crude oil barrel}}&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
== Example of use ==&lt;br /&gt;
Barrels are useful in situations where pipes are not available or a bad option, such as oil production far away from your main factory.  Barrels can be transported with a [[Belt transport system]] or [[Railway network]], by [[Logistic robot]]s, via [[Car]] or [[Tank]], or in the player&#039;s inventory.&lt;br /&gt;
&lt;br /&gt;
A simple example with [[Transport Belt]]s:&lt;br /&gt;
[[File:Crude-oil-barrel-handling-example.png]]&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[Fluid handling]]&lt;br /&gt;
* [[Oil processing]]&lt;br /&gt;
* [[Crude Oil]]&lt;br /&gt;
&lt;br /&gt;
[[Category:Items]]&lt;/div&gt;</summary>
		<author><name>Bjthinks</name></author>
	</entry>
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