Petroleum

Petroleum, or oil, although not the only energy source in the world of Fallout, was a cause of the Resource Wars in 2052. America found it necessary to use its army to secure pipelines and oil fields, meaning oil was still very important just before the Great War in 2077.
The world was known to be using nuclear cars and energy, "fusion batteries," and micro fusion technology. There are several possible reasons that oil was a vital resource for a civilization that could be powered by nuclear energy. Oil would still be a cheaper alternative to nuclear energy, or used to power lighter or smaller vehicles, such as airplanes, once distilled into other forms such as kerosene. Oil is also required as a lubricant for nuclear powered machines, and for the production of plastics. Known petroleum companies in Fallout include Red Rocket, Poseidon Oil, the Poseidon Energy subsidiary Petró-Chico and Solitare.
==Cheaper fuel==
Oil-based fuel may have been cheaper to use than nuclear fuel even up to the Great War, however it is known to have been rationed in the United States.Disaster relief outpost terminal entries; terminal, Get Registered! It's known that Europe and the Middle East collapsed after the Middle Eastern oil fields ran dry at the start of the Resource Wars. That means that both Europe and the Middle East's energy economies were based upon oil. Oil, being cheaper than nuclear power, was used until oil reserves ran dry. With their collective economies focused on oil, there was no revenue diverted to making the switch to nuclear power, or at the time nuclear powered cars were not available. That suggests high start up or costs for nuclear powered transit, at least when the Resource Wars began. In the real world, it's currently cheaper to run cars on electricity but the cost of electric cars are so much higher that few people are currently using it, hydrogen powered cars exist but are expensive, and oil remains dominant. During the U.S. oil embargo, electric cars existed in the United States but even extremely expensive gas was cheaper to use in new and existing cars. A similar situation could have taken place in the Fallout world as well.
The Resource Wars started over 20 years before the Great War. The Fallout games take place in the world devastated by the Great War and the ruins are a snapshot of technology at the time.
In the world of Fallout there are many abandoned nuclear powered cars, meaning that part of the transit fleet was no longer using oil. Fallout 3, Fallout: New Vegas, Fallout 4 and Fallout 76 have a large number of cars stripped down to their chassis, making it impossible to determine what type of fuel was expended to propel them. The presence of both gas stations and nuclear cars indicated that America was still in the process of nuclear conversion; still making oil important, with companies like Poseidon Oil and Red Rocket capitalizing on the opportunity.
==Lighter vehicles==
Some vehicles were known to be still using oil fuels, meaning some unknown problem existed that prevented 100% nuclear power. Planes seen in Fallout 3, Fallout: New Vegas, Fallout 4 and Fallout 76, and a few cars in Fallout: New Vegas and Fallout 76, still appear to have liquid fuel powered engines. The cars that are known to be powered by nuclear energy are very large and heavy; this is likely a design choice as in our real world, a generator the size of a refrigerator can power a large nuclear submarine, and a generator the size of a laptop computer can power a deep space probe for upwards of twenty-five years.
==Lubricant==
Synthetic oil, though used in limited applications during WWII wasn’t marketed until the 1960s. If in the world of Fallout synthetic oil was never mass produced they would still be using natural oil for lubricants. Cars, planes, factories and power armor would all rely on natural oil lubricants. Even if a large switch had been made to nuclear power, oil, as a lubricant, would still be crucial to the machine industry.
==Plastics==
Oil is used to make many materials, including plastics. Combat armor used composite plastics, in conjunction with ceramics, as did the T-51 power armor and the Needler pistol and its ammunition. Factory working of clays and production of plastics would require the use of oil, not only for the factory equipment but also for the treating of clay in the forms of various chemicals. Other important plastics are Polycarbonate, which would be used in impact resistant plastics like riot shields and/or face masks. An even less suspecting, but perhaps the most crucial plastic to the Fallout story, is polytetrafluoroethylene or more commonly known as Teflon. Teflon is a chemically resistant, low friction, metal coating discovered by Roy Plunkett in 1938. As Teflon is needed in the highly corrosive process of refining uranium for atomic weapons, the very sort of weapons used to destroy much of the Fallout world during the Great War of 2077, this could be a contributing factor to oil depletion.
==Mentions==
* The PMV Valdez is a tanker that utilizes gasoline.The Chosen One: "{136}{}{How do I pilot it?}"A. Ron Meyers: "{123}{}{How do you pilot this rig? Fill 'er up with some gas - try the Hubologists or the Shi after you've taken care of everything else - and press the button. The computer will take care of the rest, if it's still working. It'll sail right out to the oil rig, and they won't fire at you because you've got the IFF transponder. Just make sure you've got what you need to access everything: FOB, working computer, and fuel. Easy enough, huh?}"The Chosen One: "{136}{}{How do I pilot it?}"A. Ron Meyers: "{152}{}{How do you pilot this rig? Well, I see you already gassed her up. When you've taken care of everthing else, just press the button. The computer will take care of the rest, if it's still working. It'll sail right out to the oil rig, and they won't fire at you because you've got the IFF transponder. Just make sure you've got what you need to access everything: FOB, working computer, and fuel. Easy enough, huh?}"(A. Ron Meyers' dialogue) 
* Alaskan Pipeline
* Nuclear power became an alternative to petroleum when supplies began to dry up.Arcade Gannon: "Nuclear waste disposal. Pre-War, people figured there was so much desert in Nevada, you might as well turn it into a big dumping ground. People didn't like it, but they weren't about to give up easy access to power, not with all of the petroleum drying up."(Arcade Gannon's dialogue) 
* In 2077, U.S. gas prices hovered around $7450.99 per gallon for regular and $8500.99 for premium.:File:FoT Gas Prices.png
* Known petroleum companies included Red Rocket, Poseidon Energy, Petró-Chico, and Solitare.
* Fuel was rationed in the United States before the war.
* Red Rocket gas stations sold both gasoline and diesel.Red Rocket protectron: "Would you like gasoline, diesel, or coolant?"(Red Rocket Protectron's dialogue) At stations in the Capital Wasteland, a sign is visible on the pumps that says "Petroleum spirit. Highly flammable."
* Raul Tejada mentions Petro-Chico, an oil company in Mexico.The Courier: "What's "Petro-Chico?"'"Raul Tejada: "You never heard of Petro-Chico, un Amigo de Poseidon Energy? Ah, of course not. They were an oil company in Mexico, back before the War."(Raul Tejada's dialogue)
* A. Ron Meyers mentions a Poseidon oil rig left out on the water.
* Judah Kreger tells the Courier that internal sabotage resulted in the Enclave oil rig's destruction.The Courier: "What happened to the Enclave oil rig and Navarro?"Judah Kreger: "Internal sabotage took down the oil rig - never did get the full story. The NCR took out Navarro, saying we posed a threat to the region."(Judah Kreger's dialogue)
==Gallery==
FO76 Old timey gas pump.png
Loading02.jpg|Enclave oil rig
FoT Gas Prices.png
FO4 Red Rocket Art Book.jpg
FO4 AD Red Rocket 3.png
Gas canister.png
FNV loading billboard01.jpg
FNV loading billboard02.jpg
Fo2 Gecko Good Ending.png
Fo2 Poseidon Gas.png
Fo1 Boneyard Townmap.png
FNV Callville Bay sign front.jpg
FOSO Intro Still 07.png|Fallout Shelter Online intro slide
==References==
Category:Fallout setting
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