KMR Sport's Alex O'Grady was the driver to beat in both Friday test sessions for the GB4 Championship at Oulton Park, leading the way in both of the 30-minute tests.
The young Irishman's best time of 1m35.243s came in the first session of the day, which featured slightly cleaner running, and put him just under a quarter of a second ahead of Hillspeed's Enzo Hallman.
Thomas Ingram Hill was third fastest for Fortec, just five thousandths of a second further back and 0.007s clear of day one pace setter Luke Hilton (Nitrous Competitions ADM Racing).
Elite's championship leader Fred Green was second quickest in the second session, with that effort elevating him to fifth on the combined timesheets, ahead of lead Rookie contender Franciszek Cegielski who was sixth in his Fortec machine.
Connor Willis was next up in seventh for Hillspeed, with Elite's Matan Achituv eighth courtesy of his session two effort. His teammate Emmilio Valentino Del Grosso and Pace Performance's Torrin Byrne completed the top-10, which was covered by just over 1.1 seconds.
GB4 action resumes on Saturday, with the slightly extended 20-minute qualifying session due to commence at 11.05.
GB4 Championship, partnered by the BRDC, Oulton Park Friday testing top-10 combined result:
1. Alex O'Grady, KMR Sport, 1m35.243s
2. Enzo Hallman, Hillspeed, +0.224s
3. Thomas Ingram Hill, Fortec Motorsports, +0.229s
4. Luke Hilton, Nitrous Competitions ADM Racing, +0.236s
5. Fred Green, Elite Motorsport, +0.330s
6. Franciszek Cegielski, Fortec Motorsports, +0.620s
7. Connor Willis, Hillspeed, +0.904s
8. Matan Achituv, Elite Motorsport, +0.920s
9. Emmilio Valentino Del Grosso, Elite Motorsport, +0.999s
10. Torrin Byrne, Pace Performance, +1.169s
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