Payday Wiki
Big Oil
Heist Info
Contractor The Elephant
Contract Days 2
Loud / Stealth ✔ / ✔
Stealth bonus 15%
Loot Coke
Assault Rifles
Experience (day 1) 6,000 (completion)
+6,000 (Open the correct safe)
+1,500 (per item picked up from table)
Experience (day 2) +6,000 (completion)
+3,000 (finding computer)
+6,000 (hack completed)
+6,000 (secured right engine)
Internal name welcome_to_the_jungle
Achievement(s) On day 1 of the Big Oil job, enter the basement, open the ATM machines and take the loot. On day 2 of the Big Oil job, complete the heist with the first engine being correct. On day 2 of the Big Oil job, complete the heist with the last engine being correct on the OVERKILL difficulty or above. Complete the Big Oil job on the Death Wish difficulty or above. In the Big Oil job, complete day one in stealth on the OVERKILL difficulty or above. Complete the Big Oil job, with at least one other player, all using suits and Akimbo Bernetti 9 Pistols on the OVERKILL difficulty or above.
Complete the Big Oil job on the Mayhem difficulty or above. Complete the Big Oil job on the Death Sentence difficulty with the One Down mechanic activated.
"Gentlemen, oil is the blood of our world. Without it, we die. Time to make sure it keeps flowing."
—The Elephant when offering the heist.

Big Oil is a two-day heist in PAYDAY 2.

Contracted by The Elephant, the crew must seize a fusion reactor prototype so The Elephant can receive support from oil conglomerates for an upcoming election. The heist is listed as stealthable, but due to the structure of Day 2, this is functionally impossible.

Day 1 (Club House)[]


  1. Locate the safe.
  2. Break into the safe and find the documents.
  3. Escape.

Optional objectives[]

  1. Locate additional intel.
  2. Locate additional loot.



Asset-bodybags bag.png
Body Bags
Price: $17,500 (Normal)
$26,250 (Hard)
$35,000 (Very Hard)
$52,500 (Overkill)
$87,500 (Mayhem)
$122,500 (Death Wish)
$157,500 (Death Sentence)
Requires the Aced Sixth Sense skill to unlock
Nade asset full.png
Grenade Case
Price: $7,500 (Normal)
$11,250 (Hard)
$15,000 (Very Hard)
$22,500 (Overkill)
$37,500 (Mayhem)
$52,500 (Death Wish)
$67,500 (Death Sentence)
Requires the Gage Weapon Pack #01 DLC to unlock


Big oil 1 biker gang.png
Insider Info

Risk Level

Asset gage assignment.png
Gage Courier Packages


The group starts outside of the headquarters of the Overkill MC, who are a group of bikers that have access to information on the location of the scientist's villa.

The group must enter the premises and eliminate the bikers. The group can attempt to silently approach the buildings or assault them.

There are always at least 12 bikers during the first day of this heist. Of those, there are always 3 moving guards, with the other 9 staying in the same spot throughout the entire day, one being the camera operator. An additional 3 patrolling guards can spawn (10% chance, 100% on Mayhem+). If there's a drug-deal going on there will be another 7 additional opponents consisting of Cobra members. The bikers are holding onto 3 separate optional assets to assist on Day 2. These assets are located on three tables in the house: the side room connected to the garage via the stairs on the first floor, the second-floor landing is right next to a table, and the final piece is located on the balcony. As soon as the bikers are alerted, bikers located near the tables will move toward the table and begin to light the asset on fire. Once the biker starts the animation, you have about 1 second to shoot the biker and prevent the immolation of the asset (plane-keys excluded). On a stealth assault, one could take out all the bikers and collect the intel without losing any. Going loud, a team can assign target zones to each member to take out and control to find the intel. Also, some Perk Decks, like Muscle and Sociopath, can briefly cause the bikers to panic before they can set the assets on fire.

The often missed point on Day 1 is the massive amount of loot often hidden in the house. This is often where the majority of the mission payout is located. First, to the right of the garage, by the stairs going up into the front room, there is a locked door that can be picked or shot open. Inside of this room, there are 8 ATM's. One team member should bring the OVE9000 saw in case a high payout is desired. One can also bring an ECM jammer as they can also open ATMs, albeit less efficiently.

Additionally, the front room of the house often contains weapon caches and possibly cocaine, while the top floor can contain more weapon caches and money. The storage sheds around the border of the property can also contain weapon caches. These can be collected and returned to your escape van or boat for additional money. If the police have been alerted, then it is best to move the bags to the van as soon as possible before they arrive. Otherwise, the loot must be moved to the escape point while the group is under fire. Additional weapon cases can also appear in the room with ATMs and on the balcony.


  • Start from the garage and work your way up through the building clearing each floor fast and carefully. Try not to break any windows as it will alert the other bikers and they will attempt to burn the assets.
  • The bikers will attempt to call the police if they should get alerted by suspicious activities (such as drills, corpses, broken windows, etc.).


  • A drug deal going on.

    As of Update #42, Day 1 will take place at either day or nighttime.
  • Mines may be present in certain areas surrounding the house, moving near to one will cause a brief "detection" effect (similar to when NPCs and cameras see the player in stealth) before exploding.
  • The fences surrounding the house can be electrified, tasing the heister on contact. To check if it's the case without alerting the bikers, take out a silenced weapon, face away from the house and move backwards into the fence.
  • If the fence is electrified and the heisters spawn next to the river without an OVE9000 Saw, the heist is impossible to complete. However, regardless, if the heisters have an OVE9000 Saw, they can still get through the fence. First, someone must cut it open with the saw, then the remaining heisters must walk directly through the middle of the fence. They will get electrified once, but they'll pass the fence.
  • There may be random weapon cases around the house (the same ones seen in Firestarter Day 1).
  • There may be a drug deal happening with the Cobra Street Gang in the front of the house. If this happens then there will be 4 bags of cocaine downstairs and 1 bag of money up stairs. Like the Bikers, the Cobras will also fight players should they get alerted.
  • A doctor bag or ammo bag can spawn (10% chance for each, rolled individually).
  • There are seven distinct pieces of intel, of which three are randomly selected to exist on Day 1.

Day 2 (Engine Problems)[]


  1. Locate the security room.
  2. Hack the computer. (200 seconds)
  3. Open the door to the laboratory.
  4. Pack up the correct fusion reactor.
  5. Signal the helicopter.
  6. Take the reactor to the helicopter.
  7. (If wrong reactor) Wait for helicopter to return and send another reactor.
  8. (If correct reactor) Escape.



Alex Ammo Drop
Price: $5,333 (Normal)
$7,999.5 (Hard)
$10,666 (Very Hard)
$15,999 (Overkill)
$26,665 (Mayhem)
$37,331 (Death Wish)
$47,997 (Death Sentence)

Extra Helicopter Fuel
Price: $5,333 (Normal)
$7,999.5 (Hard)
$10,666 (Very Hard)
$15,999 (Overkill)
$26,665 (Mayhem)
$37,331 (Death Wish)
$47,997 (Death Sentence)

Camera Feed
Price: $5,333 (Normal)
$7,999.5 (Hard)
$10,666 (Very Hard)
$15,999 (Overkill)
$26,665 (Mayhem)
$37,331 (Death Wish)
$47,997 (Death Sentence)

Asset-bodybags bag.png
Body Bags
Price: $7,000 (Normal)
$10,500 (Hard)
$14,000 (Very Hard)
$21,000 (Overkill)
$35,000 (Mayhem)
$49,000 (Death Wish)
$63,000 (Death Sentence)
Requires the Aced Sixth Sense skill to unlock
Nade asset full.png
Grenade Case
Price: $4,000 (Normal)
$6,000 (Hard)
$8,000 (Very Hard)
$12,000 (Overkill)
$20,000 (Mayhem)
$28,000 (Death Wish)
$36,000 (Death Sentence)
Requires the Gage Weapon Pack #01 DLC to unlock

Intel & Additional equipment[]

Day 2 Overview
(Bain's Guide)

Day 2 Map
(Bain's Guide]])

Day 2 Blueprint
(Bain's Guide)

Risk Level

Asset gage assignment.png
Gage Courier Packages

(Found on day 1)

Codes for Shutters
(Found on day 1)

(Found on day 1)

Cold Fusion Research
(Found on day 1)

Guard Intel
(Found on day 1)

Airplane Keys
(Found on day 1)

GenSec Keycard
(Found on day 1)


This day is notorious for being very difficult and time-consuming if the crew cannot identify the correct fusion reactor or at least narrow down the number of candidates.

The crew starts outside on a hilltop, and they must gain access to the laboratory within the mansion. To do so, they must access one of three locked security rooms, and hack the system within.


Although it is somewhat simpler to carry out the first part of the day in stealth, it is important to note that the alarm will eventually sound once the helicopter is called, regardless of what players do. Additionally, the guards patrol the whole house. There will be between 5 to 7 guards on the map, depending on difficulty and random chance. On Very Hard and below, there will be 5 patrolling guards, whereas on Overkill and above there will be 6. Additionally, there is a 20% chance of one extra stationary guard spawning at the side entrance to the compound. There are several cameras scattered around the mansion, and each one is viewable using the camera feed asset. The crew may wish to kill 3 or 4 guards to clear the map of guards, leaving only a few left patrolling. If too many guards are killed, one additional guard will spawn in as an inspector, patrolling around the map for a brief period of time before despawning forever.

There is exactly one civilian, Mr. Rossy, who is either in the lab, outside the back of the mansion next to the pool or on the far side to the left of the pool, in his office on the second floor next to the server room, or sitting out the front of the mansion on the park bench next to the basketball.

Each security room door can be opened with a drill, OVE9000 saw, three Shaped Charges, ECM Jammer, or a keycard if it was found on Day 1. The system takes 200 seconds to hack. It can take longer if the police are alerted since they will constantly attempt to turn off the power with either of the two randomly placed circuit boxes.

After the hacking is completed, the crew can open the door to the lab, which is in the middle of the first floor. It contains 12 fusion reactor prototypes. At this point, DO NOT indiscriminately bag up all reactors as it will make the mission much harder as identification of the correct reactor needs to be done by bag names. The crew must find out the correct reactor to deliver (see "#Finding the correct fusion reactor"). Once a reactor is bagged, a player can signal the extraction helicopter with a flare outside. If the crew did not narrow the number of candidates to one, then they may wish to carry multiple reactors to the extraction zone at once.

When the helicopter arrives, the alarm will automatically sound if it has not already. Place the reactor in the helicopter, and Bain will take a few minutes to verify the reactor. During this time, the crew should find a defensible position, such as behind the hill next to the extraction zone, or back in the lab.

If the wrong reactor was delivered, then the crew must repeat the process and extract another reactor. After the correct reactor has been delivered and verified, the crew must either wait for the helicopter to return for extraction, or if the airplane keys were found on Day 1, escape with the airplane near the crew's spawn.


  • If you obtained the shutter codes intel from Day 1, you can toggle all of the upstairs shutters which covers most of the windows.
  • If the shutters are open (random chance), or you obtained the shutter code intel, it's possible to see into the two upstairs secure rooms to identify the server room (the third is on the main floor and has no windows). You can still see through the sides and bottom of the shutters to identify where the server is even if they are closed.
  • Guards will be alerted if they see the computer being hacked.
  • If you bought the Alex Ammo Drop, there is a chance he might drop the ammo bag(s) somewhere inaccessible, like in a tree, a hill, or at the bottom of a cliff. Usually, at least one of the bags will land in a position where heisters cannot reach by any means.
  • The engine delivery is one of the very few instances where bags carried away by law enforcers actually benefits the player crew, as a law enforcer is not slowed down by any significant margin while hauling the engine bag and their loot rendezvous points are usually near, or can be intercepted as they near, where the helicopter lands. As such, it is advisable that the team bag up all the possible engines and leave them within sight and reach of other enemies and intercept them as they near the extraction zone.
  • Avoid using explosives inside the house as the explosion may destroy the computers, preventing the ability to determinate the pressure of the correct engine.
  • Bring a gadget with a flashlight or night vision goggles. It's very dark in the laboratory when the power is out and some of the clues can be difficult to read. A flashlight will prevent you from having to run back upstairs just to turn the lights back on if you haven't found all the clues yet.
  • After failing to deliver the correct engine 5 times there's a 2% chance for Bile to refuel per flare use. A 6th time increments to 12%. A 9th time adds up to 17%, and the 11th time turns it to 27%. Having the helicopter refuel resets those chances back to 0 and disables these increments. Buying helicopter fuel eliminates this mechanic entirely.

Finding the correct fusion reactor[]

Once you have entered the lab you will be faced with 12 fusion reactor prototypes. In order to complete the heist, you must determine the correct reactor to extract. There are three parts to solving this puzzle; the correct fusion reactor is the one with the correct gas tank color, correct number of nozzles connected to the large blue hydrogen tank, and the correct pressure reading on the gauge.

A tool to help choose an engine based on these parts can be found here.


The correct reactor uses one of three possible gases, matching to a different color gas tank as seen on the whiteboard at the bottom of the stairs in the lab. These colors are always the same.

  • Deuterium (blue tank)
  • Helium (green tank)
  • Nitrogen (yellow tank)

On Day 2, a spiral-bound notebook with one of the gases written on it is randomly placed inside the building (in the lab, or on a table or desk upstairs). It can easily be overlooked if it lies in the lab as it is often in shadows; a tactical light may help to locate and read it.

Number of nozzles[]

Clipboard indicating that two nozzles are attached

There may be a clipboard in the house or lab with notes that indicate the number of nozzles. Near the bottom of the paper, there is a number or symbol followed by "× H"; a number represents the number of nozzles attached to the reactor. If a lemniscate (∞) is present instead of a number, it represents one nozzle.

Based on just this clue, the correct engine can be narrowed down to only two choices very quickly if there are one or two hoses. If there are three hoses, five engines are possible, as engine 10 is never correct.

  • One hose: Engine 1 or 2
  • Two hoses: Engine 5 or 6
  • Three hoses: Engines 7 to 12


Monitor indicating that the pressure is less than or equal to 5812 psi (401 bar)

Inside the lab are several monitors, one of them displays a psi value at the top-right part of the screen with a "≤" or "≥" symbol. The value should be either 5812 psi (401 bar) or 5783 psi (399 bar).

If the symbol on the monitor is "≤", then the correct fusion reactor's pressure gauge reads less than or equal to the value shown; if "≥", then greater than or equal to the value.

Care must be taken inside the lab so the monitor containing the pressure statistics will not be accidentally destroyed and make the identification process much harder.

An easy way to figure out the correct bar number is to multiply it by 0.07, though this is not strictly necessary. In fact, the number itself can be ignored, and players can refer only to the inequality sign to identify the correct engine. All of the engines will be around 400 bar. If the computer indicates "greater than," then the correct engine's pressure will exceed 400 bar. If the computer indicates "less than," then the correct engine's pressure will be under 400 bar. Three engines (numbered 3, 4, and 10) will always have exactly 400 bar, and none of these engines can ever be the correct choice.

Cold Fusion Research[]

One of the assets you can obtain on Day 1 is the "Cold Fusion Research Paper". Highlighted in pink in the first paragraph is the name of a specific element. This could be palladium (Pd), Titanium (Ti) or Platinum (Pt).

This will match to a whiteboard in the lab. For each row, from left to right, there is a number followed by H (number of nozzles), then inside the next column there will be a chemical equation, headed by one of the gases and the catalyst:

  • Platinum (Pt) is added to Helium.
  • Titanium (Ti) is added to Nitrogen.
  • Palladium (Pd) is added to 2H (Deuterium).

By matching your catalyst to the row, you would be able to determine the number of nozzles and the gases, completely bypassing the usage of clipboards. However, the intel always says Palladium, as the whiteboard lists Platinum with Helium and 1 hose, and Titanium with Nitrogen and 2 hoses. However, no engine with Helium and one hose exists, and the engine with Nitrogen and 2 hoses is always incorrect. As such, the correct engine will be either 9 or 12, and the only remaining information needed is pressure.

Engine layout[]

The following table shows the relative location of each engine and its properties:

  1. The engine number.
  2. The color and contents of the gas tank. (Deuterium, Helium or Nitrogen).
  3. The number of nozzles attached.
  4. The pressure reading compared to 400 bar. (> is greater than 400, < is less than 400, = is equal to 400)

There are two cases that appear to be ambiguous:

  • Helium, two nozzles, and ≥ 5783 psi could be engine 3 or 6.
    • Keeping in mind that engine 3 will have exactly 400 bar, it is not correct. Select engine 6.
  • Helium, three nozzles, and ≤ 5812 psi could be engine 7 or 10.
    • Because engine 10 also has exactly 400 bar, it is incorrect. Select engine 7.
Calculator Whiteboard
D 3 >
He 3 <
Stairs #2
D 1 >
N 1 <
He 3 =
D 3 <
N 2 =
He 2 =
N 3 <
N 3 >
He 2 >
D 2 <

If the reactor has only one or two nozzles, then only one additional clue is needed to determine the correct engine. If the nozzle count is matched correctly below, any of of the other two clues is sufficient to confirm the correct engine.

  • One nozzle, ≤ 5812 psi OR Nitrogen is engine 1.
  • One nozzle, ≥ 5783 psi OR Deuterium is engine 2.
  • Two nozzles, ≤ 5812 psi OR Deuterium is engine 5.
  • Two nozzles, ≥ 5783 psi OR Helium is engine 6.

Mayhem+ changes[]


All cameras are Titan variants.

Day 1[]

  • There are two or three Titan safes; only one of them contains the address, and the others contain a bag of money, deposit box loot, or nothing.
  • 100% chance for the three extra bikers patrol outside, making a total of 15 gangsters (or 22 with drug deal).

Day 2[]

  • After picking up an engine, there is a chance that the flare must be lit next to the pool instead of on the airfield. This location is open to sniper fire, but much closer to the mansion. Before the helicopter lands, it is best to keep the reactor behind the big seat at the corner of the pool, as the helicopter's door will be right next to it.

The FBI Files[]

Professor Rossy suffered a serious burglary at his secluded laboratory. He is a highly respected physicist, who has spent years trying to convince the scientific world of the viability of cold fusion - the cheap generation of enormous amounts of power without radiation. The mansion that houses his laboratory is in a remote area, and not easy to reach.

My Notes: I smell the spoor of the Hill on this one. From what we can gather, Prof. Rossy was on the verge of something truly remarkable. If he has finally made a breakthrough, it would be worth a lot to the right - or wrong - people. This one might lead me to a tasty catch, possibly proving Crime.Net’s political connections.


I Knew What I Did Was Wrong.jpg I Knew What I Did Was Wrong
On day 1 of the Big Oil job, enter the basement, open the ATM machines and take the loot.
Doctor Fantastic.jpg Doctor Fantastic
On day 2 of the Big Oil job, complete the heist with the first engine being correct.
Dr. Miserable.jpg Dr. Miserable
On day 2 of the Big Oil job, complete the heist with the last engine being correct on the OVERKILL difficulty or above.
House Keeping.jpg House Keeping
In the Big Oil job, complete day one in stealth on the OVERKILL difficulty or above.
Boston Saints.jpg Boston Saints
Complete the Big Oil job, with at least one other player, all using suits and Akimbo Bernetti 9 Pistols on the OVERKILL difficulty or above.
This achievement, along with many others, was accidentally unlocked for players who hadn't actually completed the heist with the needed requirements on with the Difficulties & Sniper Beta 1.3 update.
A Junkyard Full Of Junkies.jpg A Junkyard Full Of Junkies
On day 1 of the Big Oil job, kill all of the bikers within 1 minute of the heist starting.
Damn it, Bile....jpg Damn it, Bile...
On day 2 of the Big Oil job, have Bile trigger the alarm.
Throw Some Oil on the Fire.jpg Throw Some Oil on the Fire
Complete the Big Oil job on the Normal difficulty or above.
Basic Capitalism.jpg Basic Capitalism
Complete the Big Oil job on the Hard difficulty or above.
Diesel is My Juice.jpg Diesel is My Juice
Complete the Big Oil job on the Very Hard difficulty or above.
Black Gold.jpg Black Gold
Complete the Big Oil job on the Overkill difficulty or above.
Who Killed the Lights?.jpg Who Killed the Lights?
Complete the Big Oil job on the Mayhem difficulty or above.
Changing the World....jpg Changing the World...
Complete the Big Oil job on the Death Wish difficulty or above.
Slick Heisting.jpg Slick Heisting
Complete the Big Oil job on the Death Sentence difficulty.
Dirty Energy.jpg Dirty Energy
Complete the Big Oil job on the Death Sentence difficulty with the One Down mechanic activated.


  • Some players are reporting a mysterious message which may pop up during the first day of the heist saying: "Take the key from Chavez", a reference to the "Panic Room" heist from PAYDAY: The Heist. Also, if the "Alex Ammo Drop" asset has been bought on day 2, Bain can make a reference to "Panic Room" as well. In the reference, Bain says "Panic Room all over again."
  • It is not possible for the electrical fence in Day 1 to incapacitate a player; they will be freed after a short period of electrocution.
  • If the crew manages to acquire the randomly-spawned Shutter Codes on Day 1 of the heist, they could use it to close the second floor shutters on Day 2 that would block off the entire back part of the building, leaving the only way in and out through the first floor doors and windows.
  • "Deuterium" and "Nitrogen" are misspelled on the whiteboard showing the colors of the corresponding gas tanks, and the whiteboard showing the electrode/gas combinations says "PT" instead of "Pt".
  • The scientist Mr. Rossy (Day 2) is most likely a reference to the convicted fraudster Andrea Rossi who claimed to have successfully demonstrated cold fusion in 2011.
  • One of Bain's mission success quotes talking about "You guys know who Tucker is? I hope you don't" is a reference to Preston Tucker, an automobile developer in the 1930's who was subjected to corporate sabotage and espionage by other automobile conglomerates which led to his eventual bankruptcy.
    • The idea behind the Tucker reference is reflected in the nature of this heist: patent theft, Tucker of his sedan patents and Mr. Rossy (the scientist) of his prototype fusion engines.
  • On December 2013, a bug caused "palladium" to always be written on the intel.
  • There is a chance that when you switch the cameras in the house on Day 1, you will blow up the land mines.
  • There is a spiral rug in one of the mansion's rooms on Day 2 which resembles a similar carpet found in Counterfeit.
  • Even if a keycard is duplicated on Day 1, the crew will only spawn with one on Day 2.
  • Despite the FBI Files claiming Professor Rossy's mansion as "located in a remote area and not easy to reach", the police force is able to swarm in the area within a matter of minutes in large numbers and at a constant pace.
  • Due to loose item cash being capted at 2.8 million one can easily reach that limit and lose money on day 1 while playing on Mayhem+ with Chameleon aced and opening all the ATMs.
  • The music that plays when you complete a heist in PAYDAY: The Heist also plays in Day 1, in a radio.
Gameplay • Heists • Skills & Perk Decks • Weapons & Equipment • DLC