The hosts were always struggling in their chase and eventually managed only 286 for six.
"We want to change it up", he said.
England, therefore, needed some big hitting in the last ten overs of the innings to get up to a competitive score and that is exactly what happened.
When Buttler came to the crease in the 23rd over, England were precariously placed on 107-4 at the SCG.
Aaron Finch (62 off 53) and Mitchell Marsh (55 from 66) also fired but no one was able to go on with the job like Buttler (100 not out off 83) and Chris Woakes (53 not out off 36) were able to do so spectacularly for England when they were in all sorts of trouble at 6-189 with 12 overs left.
Buttler blasted his fifth one-day global hundred during a stunning finale to the innings, when in the last 10 overs he and Chris Woakes added 102 runs.
The 34-year-old who never thought he would be picked for Australia again has not looked comfortable in his two matches back from the wilderness.
On Sunday, he showed what a difference he makes for England's limited-overs setup with a classy spell.
With a 3-0 lead and two games to go England head to Adelaide with the prospect of whitewash, and a measure of Ashes redemption, in the air.
Judging the Travel Ban-and Judges
As a result, United States Citizenship and Immigration Services has announced that "until further notice", DACA is back in place . The order issued Friday afternoon referred specifically to the constitutional question as proposed in Hawaii's legal brief .
"As a group, bowling unit and fielding unit, we did give a lot more than we normally do".
Perhaps England's ability to chase confidently - their success in the first two ODIs came while batting second - was on Steven Smith's mind when he elected to bowl after winning the toss.
The system is clearly working, with England scoring at more than six an over in each of their last eight ODIs.
A win in Sydney will secure the five-match series for the tourists.
However, the narrative hasn't changed. "Our one-day cricket hasn't been up to scratch, we've got to find ways to win against quality opposition".
He was even given a lifeline after Cameron White put down a sitter but failed to make the most of the break.
Moeen Ali's horrid tour with the bat continued.
Buttler was given out lbw on 97 to start the final over but successfully reviewed the decision and then scored the needed two runs off the final ball of the innings to deservedly notch a brilliant century.
Australia captain Steve Smith and Mitchell Marsh were going along nicely in a fourth-wicket stand of 68 before the former was given out caught behind off fast bowler Mark Wood with wicketkeeper Buttler clinging on to a low, one-handed grab.
The bucket-load of runs conceded in the death overs on a hard wicket was what ultimately cost Australia the match and the series as they allowed England a total which was at least 30 runs over par.