Related Clues:

• MS. enclosure
• Motor oil can letters
• Racer's sponsor
• Its slogan is 'The Racer's Edge'
• Encl. to an editor
• Pit stop can
• NASCAR additive
• Indy 500 logo
• Race sponsor
• Big race sponsor
• Encl. with a manuscript
• Name on an oval
• Noted NASCAR sponsor
• Popular fuel additive
• Indy racer sponsor