Related Clues:
- Indy additive
- Scott Weiland's band, briefly
- 'Interstate Love Song' band, for short
- Maker of fuel additives
- Octane Booster brand
- Gasohol ingredient
- Gasoline alternative
- Big name in fuel additives
- Brake fluid brand
- Indy initials
- NASCAR-sponsoring additive
- Onetime sponsor of Richard Petty and Mario Andretti
- Winter Maintenance Formula maker
- Environmental summit topic
- Letters at Indy