The defending world champion Sebastien Loeb will take a 58 second lead into the final day of Rally Argentina.
The French driver dominated the tough second day, winning four successive stages with his Citroen team-mate Dani Sordo behind him in second place.
Loeb, who's aiming for an unprecedented sixth consecutive world rallying title, began the day in third place but overhauled both Sordo and Ford driver Mikko Hirvonen to lead the race through the Sierra de Cordoba, 700 kilometres north west of Buenos Aires.
Hirvonen had to retire midway through the afternoon with an overheating engine.
His team-mate team Jari Matti Latvala is third, one minute and 40 seconds behind.
Citroen privateer and former world champion Petter Solberg is in fourth place.
The final day sees the drivers take on another four stages over the rough gravel roads before the final super special stage in the Cordoba Stadium.