Related Clues:
- Auto additive
- Product at a gas station
- Brand of motor oil additive
- "The racer's edge"
- Motor-oil additive
- Gas treatment letters
- ''The racer's edge''
- 1985 Union Carbide acquisition
- Booze component
- Long-time NASCAR sponsor
- Auto-racing sponsor
- Tractor powerer, maybe
- Product of yeast fermentation
- Longtime Richard Petty sponsor
- Sponsor at Indy