30-weight motor oil

30-weight motor oil was a substance that could be consumed by droids, including B1-series battle droids and WA-7 waitress droids in a process similar to drinking. R0-GR, a B1 battle droid, mentioned the substance in his book, Droidography, wherein he described it as "the good stuff."

Text and facts from the “30-weight motor oil” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.