I was watching Jeopardy the other day on hulu when a clue with STP as the answer popped up. I looked it up, and it looks like they've been an answer 5 different times on the show. Here are all the clues, dollar amounts, categories, and episode dates.
2017-03-23 -- DECODING THE HITMAKING BAND $1000: In order: rock, a place of worship, a bunch of aviators
2014-11-1 -- NOT A POP GROUP, YET A POP GROUP $600: Scone or Rosetta; a Jewish house of worship; Chuck Yeager & the Red Baron
2008-04-23 -- MUSICAL INITIALS $1200: The name of this grunge band with hits like "Interstate Love Song" is sometimes shortened to STP
2004-07-20 -- ROCK & ROLL $1,000 (Daily Double): The name of this '90s group was partly inspired by an STP motor oil logo
2000-03-27 -- PURPLE MUSIC $300: The 1994 album "Purple" by this band includes "Vasoline" & "Interstate Love Song"
Edit- Found one VR one too
2008-01-08 -- FIREARMS IN SHOW BIZ $1600: Slash must love the NRA; he went from Guns N' Roses to join STP's Scott Weiland in forming this supergroup