Sir Alex Ferguson wants United fans to emulate the atmosphere they displayed against Celtic in every home game.
The home contingent's reaction to a 6,000-strong army of Hoops fans made for an incredible ambience in United's 3-2 win, a din Sir Alex wants to sample every week.
He said: "I keep saying I wished every team could bring 6,000 fans with them like Celtic because it does create a competitive element between the fans.
"It created a far better atmosphere and our fans are better because of it. I think back to some of the great Wednesday nights - electric. We need that more often."
Celtic's visit was a far cry from last Saturday's win over Spurs, which was conducted against a far quieter backdrop.
With an increased capacity and better acoustics by virtue of Old Trafford's redevelopment, Sir Alex wants the fans to become a weapon against opposing teams.
"We have to get that atmosphere right throughout the seasons," he said.
"Some weekends they come here to be entranced, to see magic. Half of them are sleeping, waiting to be entertained. But we need their spirit to ignite the team at times. It should not always be the other way around. A fan can stir his team."
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