STP, the iconic engine additive brand and logo, long known for its connections to Indy racing greats Andretti, Parnelli Jones, Gordon Johncock and some guy named Richard Petty, has been largely absent for 11 years in major American motorsports.
That is, until yesterday when the brand announced it is returning to "big-time" racing with sponsorships in NASCAR's Sprint Cup and Nationwide series, at numerous racetracks as well as in the NHRA.
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