Red Bull Racing's Sebastian Vettel was pleased following practice on Friday for the European Grand Prix at Valencia in Spain.

Vettel was sixth quickest this morning in the opening session, but improved this afternoon - like all the runners - to post a 1 minute 39.339 seconds, which left him just 0.056 seconds off Fernando Alonso, who was fastest for Ferrari.

Vettel completed over 50 laps in total and speaking at the end of the day he reckoned the pace of the Adrian Newey-designed RB6 was very encouraging, as they didn't think the car would be that well suited to the 3.367 mile Valencia street circuit.

He also revealed that the Milton Keynes-based outfit was happy with the work done on its version of McLaren's F-duct.

"Overall a good day," Vettel summed-up. "We did a lot of laps, we didn't have any problem with the car so we could follow our programme like it should be on a Friday.

"We need to see if we keep the F-duct in the car, we need to confirm that, but all in all I think the pace was promising today considering this shouldn't be our strongest track. We did a step forward with the whole car - it was a good day for us."

Mark Webber meanwhile was also happy, even though he was fractionally slower than his team-mate in both sessions. He ended the day third overall on a 1m 39.427s, having done 46 laps in total.

"We had a good Friday programme with no interruptions and evaluated the tyres and the F-duct which we will look into tonight - as we all know it's not without its challenges getting that thing working," Webber added.

"The track changed a lot this afternoon, the conditions were moving around a bit. But a very productive day for us: the car ran faultlessly and was pretty comfortable."