Flamethrower Fuel
Ammo · ConsumeBullet0★The fuel burned by a Flamethrower and equivalents, mixed on Weapon Assembly Line II.
No recipe takes it as an ingredient. Whatever you build is the finished article, so there is no reason to hoard spares.
Details
It weighs almost nothing and stacks to 9,999, so there is no reason not to carry a full stack.
Flamethrower Fuel Crafting Recipe
Crude Oil
Refined Ingot
Coal×2
Ore×2Crafting it takes 3 materials across 2 types, and the bottleneck is almost always the 2× requirement — line that up first and the rest follows. Each craft returns 10, so the real cost per unit is lower than the list suggests.
Where to Find Flamethrower Fuel
If you would rather just buy it, the seller is Caravan Shop at 280 Gold.
It also shows up as world loot — crates on the oil rigs and junk hauls while fishing in the Sakurajima, usually 100–200 at a time.
| How | Where | Details |
|---|---|---|
| Merchant | Caravan Shop | 280 Gold |
| World loot | Junk hauls while fishing in the Sakurajima | Grade 1 · 25.0% chance · 5–10 at a time |
| World loot | Crates on the oil rigs | Grade 5 · 14.3% chance · 100–200 at a time |
Using Flamethrower Fuel Well
The recipe sits at technology level 52 and costs a single technology point, which is cheap for that tier — the real gate is reaching 52 at all, since the gun it feeds (Flame Thrower) is useless without it. There is only one fuel unlock and one fuel item: every schematic grade of the Flame Thrower, from Schematic 1 up to Flamethrower Schematic 4, burns this same fuel, so upgrading the weapon never changes what you have to stock.
A Flame Thrower holds 100 fuel per tank, and the recipe yields 10 per batch, so filling one empty gun is exactly ten crafts: 20 Crude Oil and 10 Refined Ingot. Budget in tanks, not rounds. At 0.01 weight each, a thousand units is 10 weight — carrying three or four spare tanks into a raid costs you almost no capacity, so the limit on how much you bring is crude oil supply, never encumbrance.
This is one of the slowest ammo types in the game to produce. A batch of 10 carries 100,000 work — 10,000 per unit, roughly 2.5x a rifle round (Rifle Ammo) and 5x an assault rifle round (Assault Rifle Ammo), with only missile and energy-weapon ammo costing more. Hand-cranking the bench for a full tank is a million work by yourself; queue it as a standing order and let high-Handiwork base Pals grind it down while you do something else.
Buying instead of crafting is a poor trade at scale: at 280 Gold a unit, one filled tank off the caravan shelf is 28,000 Gold. Treat the shop as a top-up when you are already at the merchant and short a few dozen, and let the oil rig crates carry the bulk — a single crate roll drops 100 to 200 at a time, which is one to two full tanks in one pull and skips the work cost entirely.
Weapons That Fire Flamethrower Fuel
Only one weapon takes Flamethrower Fuel, so a stack of it is worth exactly as much as that weapon is.
Alternatives and Upgrades
Other ammunitions at a similar tier, for when you want to weigh this against the rest of its class:
