Whelen Engineering Racing driver Felipe Nasr set the pace early on in Thursday morning’s first practice session ahead of the Mobil 1 Twelve Hours of Sebring.

The Brazilian posted a time of 1:46.996 early on in the 60-minute session in the No. 31 Action Express Racing-run Cadillac DPi-V.R to go 0.355 seconds clear of Dane Cameron’s Acura ARX-05.

The DPi field was relatively mixed, with Cadillac, Acura and Nissan all represented in the top four.

Wayne Taylor Racing’s Cadillac DPi placed third, ahead of the Nissan DPi of CORE autosport.

Porsche and Ford led the way in GT Le Mans with Laurens Vanthoor ultimately quickest in the No. 912 Porsche 911 RSR ahead of the pair of Ford GTs.

Vanthoor’s time of 1:56.983 was enough to take him over three-tenths clear of Richard Westbrook and Joey Hand’s times for Ford.

Mario Farnbacher and Meyer Shank Racing topped GT Daytona with the No. 86 Acura NSX GT3 Evo, almost half a second clear of Patrick Long’s time for Park Place Motorsports.

The session was red-flagged twice in order to retrieve Anders Fjordbach’s PR1/Mathiasen Motorsports Oreca 07 Gibson and Misha Goikhberg’s JDC-Miller Motorsports Cadillac DPi.

PR1/Mathiasen still led the two-car LMP2 class with a best time over 1.5 seconds clear of Performance Tech Motorsports’ similar Oreca.

Several teams, including Wayne Taylor Racing and Precision Performance Motorsports, were given drive-through penalties for missing Michelin’s RFID reader.

Practice 2 is scheduled for 2:40 p.m. EDT ahead of night practice at 7:45 p.m.

RESULTS: Practice 1