Billy Oilchanger is the Octane Gain race car, number 58.
It's Billy Oilchanger's dream to become a racing color commentator after he retires. He's watched all the greats, like Darrell Cartrip and Bob Cutlass over the years, and even practices announcing by calling the races out loud to himself while he's in them. It's great experience, though the other drivers find it distracting and a little creepy.
Billy is painted orange, with yellow and black painted on his sides. He has the Octane Gain logo on his hood and sides, with the number "58" on his roof and sides.
Billy is a Sherpa Motors Iota GT.
Billy is the Piston Cup race car for the Octane Gain racing team.
- Billy's fellow race cars have grown a dislike to him, as they find him extremely distracting.
- On the Cars: Race-O-Rama ride, his licence reads "SIENNA".