- "Does anyone have any oil? I'm a little stiff..."
- ―A B1 battle droid
Oil was a slippery substance used as a lubricant for mechanical devices as well as for medicine, nourishment, and cooking. Droids were often given oil baths to remove contaminants from their mechanical parts. At times, oil could get clogged in a droid's photoreceptors. When C-3PO was treated to an oil bath that used this particular type of oil, he remarked that his olfactory sensors were strangely affected by it.[source?] Petroleum was a type of oil that was used in the processing of plastics.
On Drexel, Governor Quarg's band of marooned pirates procured oil by extracting it from the planet's native fish population. On Maridun, the Lurmen colonists extracted oils from enormous seedpods for use as nourishment and medicine.
- Star Wars: The Old Republic
- Star Wars Episode I: Watch Out, Jar Jar! (Picture only)
- Outbound Flight
- Star Wars: The Clone Wars – "Evil Plans"
- Star Wars: The Clone Wars – "R2 Come Home"
- Star Wars: The Clone Wars – "Point of No Return"
- "Deadly Allies"—Star Wars: The Clone Wars Comic UK 6.51 (Mentioned only)
- Star Wars: Episode III Revenge of the Sith
- "Memory Loss"—Star Wars Comic 13
- Star Wars: Episode IV A New Hope (First appearance)
- A Boy and His Monster: The Rancor Keeper's Tale (Mentioned only)
- Star Wars 13: Day of the Dragon Lords!
- Star Wars Episode V: The Empire Strikes Back (novel)
- Taster's Choice: The Tale of Jabba's Chef
- Luke Skywalker and the Shadows of Mindor (Mentioned only)
- Fate of the Jedi: Outcast (Mentioned only)
- Star Wars Trilogy Sourcebook, Special Edition
- Cynabar's Fantastic Technology: Droids
- Gundark's Fantastic Technology: Personal Gear
- Alien Encounters
- Star Wars: The Complete Visual Dictionary