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Sebastian Vettel has been told that there is no risk of him facing an engine change penalty at the Italian Grand Prix, after fears he may need to use a sixth unit this weekend.



Vettel's fifth engine failed in practice in Belgium a fortnight ago, following an ignition problem.



Post-event investigations revealed that the engine was salvageable though, and it was fitted to his car for the start of track action at Monza on Friday.



Renault's head of track operations Remi Taffin confirmed that the power unit had run without trouble and that meant Vettel was now in the clear for this weekend.



"What we have done this weekend is that we have re-used the engine that we used on the Friday at Spa, which was the fifth one," Taffin said, when asked by AUTOSPORT to clarify the situation.



"It is supposed to go through the weekend now, so there will not be a sixth engine for Sebastian."



Taffin concedes that at some point Vettel will need to use a sixth engine, and a decision on when that comes will be taken at each race to see if there are tactical benefits to bring that unit in earlier.



He said: "In complete fairness, we have these kinds of discussions every single race, for one hour maybe, and it is always the same discussion.



"Until you get to the point where there is a big window to say I go for it, then you keep going, but this is strategy. Anything can happen and that is what it is."