Haroldeans could have no complaints as they crashed here.
Tim Zoltie had already come close Leeds before Vale drew first blood on the half-hour mark
The striker swept home after good work on the right wing James Landes to put Leeds into the ascendancy.
Haroldeans shaded the start of the second-half with Adam Shiffman coming the closest to a leveller.
The midfielder was foiled by Leeds goalkeeper Louis Abrahamson – and they were made to pay when Amar sealed the win.
Vale capped an impressive display by laying on the chance for Amar to stroke home in the 70th minute.