 Leonard would finish in 3rd place at the Stardust 150 at Stardust International Raceway; this would end up being his best finish of the season.At the Indianapolis 500, Leonard would begin to drive for STP-Granatelli Racing first to drive the #40 STP Oil Treatment Granatelli-Pratt & Whitney Canada PT6 but he would crash that car in practice.As a result, he would drive the #60 STP Oil Treatment Lotus 56-Pratt & Whitney Canada PT6 in place of the injured Jackie Stewart.