The Fuel Oil Bucket is a vanilla-style fluid container from the Ala Industrial mod that carries one bucket (1000 mB) of fuel oil — the thick, dark-brown residue that settles at the bottom of oil distillation. It is not crafted on any table: place an empty bucket into the fuel-oil slot of the Distillation Column's interface, and the tower fills it while it distils crude oil into diesel (a pump works for bulk moves into tanks). The Fuel Oil Bucket stacks to 1, and emptying it hands the empty bucket back.

Fuel oil is the column's inescapable by-product: every 1000 mB of oil plus 400 EU yields 700 mB of diesel and 200 mB of fuel oil — one fifth of a bucket. The bottom tank holds 10 000 mB and is extract-only, and once it fills up the whole distillation stops, so draining fuel oil is part of running the tower. The Fuel Oil Bucket leaves three options: store the fluid (in the world it behaves like water — it does not burn and harms nothing), pour it back into the input tank for cracking (1000 mB of fuel oil + 400 EU → 600 mB of diesel), or hold onto it as future generator fuel — the planned liquid-fuel generator will burn fuel oil at 6 EU/t (6 000 EU per bucket, half of diesel), and the fluid already sits in the c:combustion_fuels tag with diesel and lava. The mod runs on Minecraft 26.2 (Java Edition) on both Fabric and NeoForge.