how old was john travolta in grease

Question

John Travolta was young for the cast of Grease, but still older than his character.

Answer 1

While playing Danny Zuko, a high school senior, John Travolta was actually 23 years old during filming in 1977 [Screen Rant]. This was because it's easier to cast actors over 18 and the age difference wasn't as noticeable for a stylized movie like Grease