Mercedes have given some insight into Lewis Hamilton's stoppage during second practice for the Dutch Grand Prix, explaining that he was running his highest mileage engine. Hamilton stopped on track after completing just three laps in Friday afternoon's FP2 session at Zandvoort, compounding a lack of running after FP1 was significantly disrupted due to Sebastian Vettel's own engine issue. Mercedes told RacingNews365.com post-session that Hamilton was running 'PU1', the highest mileage unit in his pool, and that the issue was caused by an unusual behaviour in the oil system. Speaking after the session, Hamilton said: "I just lost power, so they just told me to stop. It's not the end of the world. "This morning we only really got 20 minutes of running, obviously, with the red flag. Naturally, it puts [you] on the back foot, but Valtteri [Bottas] looks like he had a good session, so hopefully tomorrow we can try and make up for some of the time." Hamilton ended the day 11th fastest, with Valtteri Bottas fourth in the sister Mercedes.
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