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WATCH: Engine worries for Leclerc after smoky exit from FP3
FP3: An early - and smoky - end to Leclerc's final practice
Charles Leclerc's final practice session for the 2019 United States Grand Prix lasted barely 15 minutes, his Ferrari coming to a smoky halt out on track in Austin.
His team subsequently found an oil leak, opting to make a power unit swap ahead of qualifying. As the change is to a previously-used unit, there will be no grid penalty for Leclerc.
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