Dillmann is not yet one of the confirmed GP2 drivers for 2012, but he has been called up by Ocean to drive for them in the three-day Jerez test while Racing Engineering likewise turned to Nathanaël Berthon to cover this week's track time. Similarly new GP2 entrants Venezuela GP Lazarus gave a test seat to Vittorio Ghirelli, who triggered a red flag in the afternoon session when his car stopped out on track early on.
Rapax, who have yet to make any driver announcements for the upcoming season, opted to call in Dani Clos and Daniel De Jong for this week's tests at Jerez.
The session resumes on Wednesday at 9am local time, 8am GMT.
Full times from day 1
of the Jerez GP2 pre-season test.