Oil is the first fluid the Ala Industrial mod adds and the only resource you can neither craft nor smelt — you find it. Deposits generate across the whole Overworld regardless of biome and never appear in the Nether or the End: surface patches about once per 150 chunks, mine-depth lakes at Y −40…−8 in roughly one chunk of fifty, deep reservoirs at Y −50…−30 once per ~40 chunks, and the oil vein — once per ~600 chunks — announced by a one-to-three-block spout visible from the surface. A deep reservoir averages ~1,200 buckets and stores 76% of all Oil in the ground; a vein dome holds ~3,700, as much as twenty mine lakes. Every deposit is finite: scooped source blocks never regenerate, so Oil is collected with an empty bucket, a Vacuum Capsule, or a Pump, and the spent lake is abandoned.

Oil is the thickest fluid in the game: it spreads slower than lava, a spill runs about a third the length of a water one, and wading inside is heavily slowed — boats do not float, and holding jump surfaces at only about one block per second. Falling into Oil deals no fall damage, but breath drains underwater-style, so a dive is planned by air, not depth. Oil is flammable: neighboring fire or flint and steel ignites the pool block by block, while lava alone never does, and the mod's oilBurns setting (on by default) can make the liquid inert. The Polymerizer turns 1,000 mB of Oil plus 400 EU into raw rubber, and the Distillation Column splits a bucket into 700 mB of diesel and 200 mB of fuel oil — roughly 8,200 EU net per bucket through the liquid fuel generator.