The decision not to pit under the fifth caution of the race delivered the Chevrolet Corvette DPs of Spirit of Daytona Racing and Bob Stallings Racing to the top two positions, Oliver Gavin and Alex Gurney fighting for the lead once the green flag few again.
The interruption to racing was caused by the Rick Ware Racing Mustang, stopped on the exit of turn one with front damage as a result of being hit by Jeff Segal in the AIM Autosport Ferrari 458 as he moved past the slower Mustang.
The caution brought many of the leaders into the pits. A.J. Allmendinger pitted from the lead for Michael Shank Racing, with Allan McNish and the two Ganassi cars following down the pitlane.
The stop under caution was the second pit visit of the hour from both McNish and Allmendinger, both having pitted on the same lap on twenty minutes earlier when running. McNish dominated the early part of the hour, pulling out a seven second lead in the time between the end of the previous full course caution. However, when he and Allmendinger pitted, and though both stayed in their respective cars Allmendinger, emerged two seconds ahead after the outlap and went on to assume the lead after others had made their own stops after the lead had changed hands several times, Dario Franchitti and Jon Fogarty each getting the chance to log laps in the lead.
Fogarty's no.99 Bob Stallings Gainsco liveried car would return to the lead battle in the hands of Alex Gurney as he fought with Oliver Gavin towards the close of the hour.
Two high-profile Porsches suffered minor delays. Marc Lieb had handed the Brumos Racing entry over to Rolex 24 legend Hurley Haywood who kept the no.59 in the class top 10 despite losing time after spinning out at the bus stop chicane.
Seth Neiman, aboard the Flying Lizard Motorsport Porsche suffered a spin at the first horseshoe turn after contact with Colin Braun in Krohn Racing's Lola-Ford Daytona Prototype. Braun was attepting to make a pass around the outside of the right hander but Nieman appeared to wash out from the apex clipping the green and blue prototype and spinning backwards into the grass. Both car suffered damage as a result of contact, though both were able to limp back to the pits.
Following a number of GT pitstops early in the hour Ronnie Bremer was leading the class in the Stevenson Motorsport Camaro he shares with John Edwards and Robin Liddell. However, after the caution period and restart the Camaro squad had slipped to second, Magnus Racing retaking the class lead and eleventh overall.
50th Rolex 24 at Daytona DP class standings after Hour 6
1. #90 Spirit of Daytona – Garcia/Gavin/Magnussen/Westbrook
2. #99 Bob Stallings Racing – Fogarty/Gidley/Gurney
3. #01 Chip Ganassi Racing – Hand/Pruett/Rahal/Rojas
4. #60 Michael Shank Racing – Allmendinger/Negri/Pew/Wilson
5. #6 Michael Shank Racing – Goncalves/McDowell/Nasr/Yacaman
50th Rolex 24 at Daytona GT class standings after Hour 6
1. #44 Magnus Racing – Lally/Lietz/Potter/Rast
2. #57 Stevenson Motorsport – Bremer/Edwards/Liddell
3. #23 Alex Job Racing – Collard/Holzer/Leitzinger/MacNeill
4. #66 TRG – Farnbacher/Keating/Pilet'Simonsen
5. #88 Autohaus Motorsports – Edwards/Marsh/Milner/Taylor