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3. Racing Series Octane Booster maker

Alternative clues for the word stp

• Auto performance brand
• Brand for a gearhead
• Valvoline competitor
• Brand of fuel additives
• DeLeo brothers band (Abbr.)
• Motor-oil additive
• Auto-racing sponsor
• Sister brand of Armor All
• Fuel additive brand that sponsors many auto racing events
• ''The racer's edge''