CATAWBA, Wis.—The owner of a 1991 Chevrolet Silverado that’s traveled more than a million miles is parting with what he calls his “old girl.”

Frank Oresnik says his pickup will go on sale tonight on eBay. The minimum bid is $30,000.

The 58-year-old says the truck has had four radiators, three gas tanks and five transmissions but that the engine is original.

He racked up much of the mileage delivering seafood from a Chicago supplier to Wisconsin, Illinois and Michigan.