Related Clues:
- Big car racer sponsor
- Additive that once sponsored Richard Petty
- Indy inits.
- Valvoline alternative
- Indy 500 inits.
- Brand for a gearhead
- Richard Petty sponsor
- Additive at Indy
- Unsustainable but trendy fuel source
- Brand at a gas station
- Engine oil additive
- Motor oil letters
- It gives punch to punch
- Auto-racer sponsor
- 1999 Clorox acquisition