Toyota led the majority of the first half of running at the Spa-Francorchamps round of the FIA World Endurance Championship.
The two TS050 Hybrids dropped to fourth and fifth on the opening lap but climbed back into the top three after Audi and Porsche hit trouble. Anthony Davidson is currently running at the front in the #5 car, 1 minute 16.946 seconds ahead of Lucas di Grassi in the #8 Audi R18.
Two punctures in quick succession forced the pole-sitting Porsche 919 Hybrid of Brendon Hartley, Mark Webber and Timo Bernhard into its pit garage after one hour and 30 minutes.
The setback came shortly after the #2 Porsche of Marc Lieb, Neel Jani and Romain Dumas encountered a temporary hybrid issue that forced the car off the lead lap.
Audi also ran into mechanical issues, with the #7 R18 requiring a lengthy service following reports of poor downforce from driver Benoit Treluyer.
Kamui Kobayashi currently sits fourth in the other Toyota after the Japanese driver slipped past Dumas in the twisty second sector. The move occurred moments after the first of two full course yellows, called following a heavy rear-end impact for Nicki Thiim in the #95 Aston Martin. Thiim was reported ok by his team, but the Aston was too damaged to continue. The second brief caution period occurred after two hours 49 minutes for the recovery of on-track debris.
In LMP2, Manor is leading the way with James Jakes currently aboard the #45 Oreca 05-Nissan, with Stephane Richelmi 17.596 seconds back in the Signatech-entered Alpine A460.
The class had been dominated initially by the G-Drive Racing Oreca 05, but a puncture for Nathanael Berthon pushed the team back to 11th.
GTE-Pro has so far been monopolised by the two AF Corse Ferrari 488s with the two Chip Ganassi Racing Ford GTs running consistently behind. In GTE-Am, the pole-sitting Aston Martin leads, with Mathias Lauda currently circulating 1 minute 03.338 seconds ahead of the Abu Dhabi Proton Racing Porsche 911 RSR of David Heinemeier Hansson.