From CNBC:

Castrol, which signed on as the official motor oil of the NFL last season, is pairing up with former Baylor quarterback and Heisman Trophy winner Robert Griffin III, using him to promote its Castrol Edge product. RGIII, who is expected to be taken second in the draft by the Washington Redskins, will be featured in banner ads for the premium synthetic oil brand, along with a game that allows consumers to see how fast they can get him to run. RGIII will promote the partnership through Twitter, which he joined last week. His handle, @RGIII, already has almost 90,000 followers.