Gravano did not kill Steele, according to Phil Leonetti.

The Gambino's wanted Frankie Steele hit for the Russo shooting and he was supposedly hiding out in philly so the Gambino's asked Scarfo to try to locate him for them. Scarfo told them he'd take care of Steele as a favor to NY. According to Leonetti it was John Berkery and Long John Martorano who took care of Frankie Steele. His body was found in the trunk of car parked at the airport in philly.