The West Yorkshire side thrashed Charlton Athletic 6-1 in Peter Reid's second match in temporary charge.
It was a humiliating defeat for the Addicks - their worst since returning to the Premiership.
The result gave Leeds much needed breathing space near the bottom of the table after they had been put under pressure by Bolton's lunchtime win over Manchester City.
The game started 15 minutes late because Leeds supporters were held up by traffic congestion but the visitors certainly were not delayed as they raced into a 3-1 interval lead.
Leeds forced five corners in the first six minutes and it was no surprise when they went in front in the 12th minute, Harry Kewell scoring from close range from Alan Smith's left-wing cross.
It was 2-0 for the visitors on 34 minutes when Ian Harte scored from the penalty spot after Richard Rufus brought down Smith and three minutes before half time Smith was again in the centre of the action setting up Mark Viduka to put Leeds three ahead.
Charlton, who had failed to mount a worthwhile attack in the opening half, were thrown a lifeline in the 45th minute when they were awarded a penalty after Lucas Radebe fouled Scott Parker and Jason Euell scored from the spot kick.
Charlton made two substitutions at the break and only a great save from Paul Robinson denied Parker a second Charlton goal.
But it was virtually the last time the home side made any impression in the game as Leeds stormed to their conclusive victory.
Viduka put them 4-1 ahead after 53 minutes after some more excellent play by Smith and the Australian striker completed his hat-trick three minutes later from the penalty spot after Luke Young had fouled Smith.
A mistake by Charlton substitute El Khalej Tahar completed Charlton's woe as he presented the ball to Kewell who made no mistake to score Leeds sixth goal in front of their jubilant travelling fans.
Reid, who wants to keep the job on a permanent basis after the end of the season, was obviously delighted with his team's performance and their professional display.
He must also have been relieved that he was able to bring back some important players including skipper Dominic Matteo who has been sidelined for some time.
Charlton have now taken only one point from their last four matches and their season is in danger of falling apart after a good run had taken them into the top half of the table.