Anti-oil



Multi-grade Anti-Oil was a red liquid used by the Doctor to clog machinery and gears. The Doctor used a wine glass of anti-oil to immobilize a Clockwork Droid on the SS Madame De Pompadour, captioning the oil with the phrase: "If it moves, it doesn't." (DW: The Girl in the Fireplace)

''The Anti-Oil was probably found somewhere on the ship, as it's highly unlikely to have been on Earth in 18th century or somewhere on The Doctor. This places the technological date of Anti-Oil in the 51st century.''