Tech 1 Racing's Daniel Ricciardo set the fastest time in the second Formula Renault 3.5 practice session at Motorland Aragon this afternoon
The British Formula 3 champion recorded a lap of 1m43.478s, an improvement of two tenths of a second over his morning's effort.
Series returnee Mikhail Aleshin was the Australian's closest challenger for Carlin, while session one pace-setter Sten Pentus remained in contention in third.
"Today was pretty frustrating at first," said Aleshin. "This isn't one of my favourite circuits, but even so we struggled more than I expected in the first session this morning.
"We changed quite a lot on the car between the first and second session and everything came together when we put new tyres on the car this afternoon. The balance of the car felt really good and I feel happy with our low downforce set-up. Based on the work we've done today, I think we're in pretty good shape for qualifying tomorrow morning."
Draco's Nathanael Berthon sat at the top of the timesheets for the first seven minutes of the hour and fifteen minute session, before being displaced by Ricciardo.
The Romagnat driver was made to settle for fourth spot, ahead of Federico Leo and Keisuke Kunimoto. Former Macau winner Kunimoto was fastest of all over the first sector of the 3.3 mile circuit.
Following a relatively subdued morning, Argentinean Esteban Guerrieri appeared to show signs of being acclimatised to his new Czech team ISR in eighth. The former Formula Renault 3.5 race winner has been out of action since the 2009 final at Motorland last October.
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