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Monaco - Daniel Ricciardo has been favoured with the one upgraded new engine available to Red Bull for this weekend's Monaco Grand Prix, a move that leaves record-breaking team mate Max Verstappen racing with less power.
The new engine from Renault was tested in post-Spanish Grand Prix testing at the Circuit de Catalunya earlier in May and two have been made available by Renault - one for their works team and one for customer Red Bull.
Half a second per lap
The Renault Formula 1 team engine will be given to Kevin Magnussen for this weekends classic test on the Mediterranean street circuit.
It has been estimated that the engine is worth up to half a second per lap, in comparison to the older version.
Read: In the FIA works - F1 engine 'sound generator'
Dutch teenager Verstappen revelled in using the new unit in testing just days after he had become the youngest race winner in the sport by triumphing at the Spanish GP.
Honda said that two-times world champion Fernando Alonso was to have a new engine in his McLaren this weekend.