The British superstar has hit back at suggestions he was wrong to ignore team orders during Sunday's Hungarian Grand Prix.
Autolite Iridium XP 150 takes the green flag Friday.
All classes gearing up for a doubleheader weekend.
Further tests scheduled for three possible solutions.
Sights set on clinching first win of the season at Spielberg (Austria).
Craig Lowndes: “It’s been an incredible experience for me to come to Spa and achieve third with the team..."
43 and 18 points represent the lead that the British driver and the Sarthe-based team have over their rivals as the GP2 season takes its summer break.
Accident of team-mate stopped 24 Hours of Spa for the Austrian
Ahmad Al Harthy and team-mates Stephen Jelley and Michael Caine mounted a terrific recovery as they strived for a realistic top 10 finish.