Webber said failed engine already ‘on edge’

(GMM) Mark Webber on Friday played down the significance of his engine failure in afternoon practice.

Towards the end of the second session at Istanbul Park, the Australian's RB6 stopped on track with a failed Renault V8.

But although Red Bull has suffered several reliability problems in 2010, the joint championship leader said the engine fitted to his car was high on mileage.

Drivers are allowed to use any of their allocation of eight engines on a Friday, with one engine only needing to be used consecutively on Saturday and Sunday.

"We were expecting it to be right on the edge," said Webber.