Hour 15: The Riley & Scott retired just at the top of the hour, seems as if the Ford-based Elan engine had valvetrain trouble. Pity, they were running quite well and threatening Cadillac for the best American car. The non-factor Kondo Dome also retired, their's was gearbox trouble.
Ron Fellows is suffering from food poisoning and might not get back in the car. This is a crucial development as the Corvette is like an oven in the daytime heat, so much so that the drivers can't double stint. So come full daylight it will likely be Johnny O'Connell and Oliver Gavin swapping stints.
The GT lead is still Freisinger with Racers Group nipping at their heels.
The list of retirements is growing, only 33 cars remain.