• The loonie's Fed-fueled gains had all but evaporated on Thursday when it had swung from fresh six-year lows above C$1.28 to nearly multiweek peaks below C$1.25. 
  
  
• The loonie's better performance Wednesday marked its best day since September 2011. But as the dust settled and oil fell further Thursday, the Canadian unit was back under pressure and nestled near its multiyear trough.