SULFUR Unlabeled Oil: What It Does and Is It Worth It

Unlabeled Oil applies a random Oil to a gun's empty enchantment slot — the gun gets any oil in the game, and you only find out which one after it is applied. Its in-game description simply reads "Enchantment — drag this onto a weapon with an empty enchantment slot to enchant it. What could it be...?"

What you get and what it costs

Unlabeled Oil is a 1×1 oil item that buys for 300 SulfCoins and sells for 150. Per the official SULFUR wiki entry, Kevin always has 3 Unlabeled Oils for sale, so unlike most oils, players report this one as a reliable restock — you never have to hope it appears in the loot pool.

The result is a full gamble on the oil pool. It can land a powerhouse like Tandem (+100% projectile amount, -15% damage) or a joke oil such as Elephant Oil that most players never seek out. Because the roll is random, treat the 300 SulfCoin price as a lottery ticket rather than a purchase with a known value.

Is it worth buying or using?

Players on the Steam forums mostly say no for good weapons. One detailed discussion thread argues that "mystery oils have zero value within the current system where you can't remove the enhancements," because decent weapons are rare and a bad permanent roll gimps a gun forever. The same thread notes oils cannot be removed once applied — a warning repeated in-game on loading screens, and by the SULFUR gun-building YouTube guide, which tells viewers not to put meme oils on anything they care about.

Where it can make sense, per the oils-ranking video: experimenting on a spare or disposable gun, or deliberately building an all-random five-oil weapon as a fun challenge. If you see one in the field and do not want to gamble, selling it for 150 SulfCoins is a reasonable pick.

Next steps

• Planning a serious weapon first? The SULFUR oils page helps you pick known, strong oils instead of gambling.
• If you rolled something useful, the SULFUR builds page shows how players combine oils into full gun builds.

FAQ

What does the SULFUR unlabeled oil actually apply?

A random Oil from the game's pool, applied to a gun's empty enchantment slot. The result is hidden until you apply it.

Can you remove an Unlabeled Oil result from a gun?

No. Per first-hand player guidance, oils, scrolls and attachments cannot be removed once attached, so a bad roll is permanent on that weapon.

Where do you buy Unlabeled Oil in SULFUR?

From Kevin, who always stocks 3 of them for 300 SulfCoins each. A player video also notes a hideous troll in the church attic always has one.

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Checked 2026-11-06 against the official SULFUR Steam page (SULFUR 1.0 patch context), the Unlabeled Oil page on the official SULFUR wiki, a Steam community discussion thread, and two first-hand player YouTube guides. The exact pool of possible rolls (and whether every oil can appear) is not confirmed by any source here.