The top five positions remain the same at the end of the eighteenth hour as they started with the #60 Michael Shank Racing car leading the field. The GT field remains largely the same with the exception of the #44 Porsche of Richard Lietz was forced to serve a one-minute penalty.
The penalty was a result of an earlier stop from Lietz where it was judged that a crew member was working on the undertray of the car while refuelling was taking place. Under usual rules the team are not allowed to work on the car while refuelling. The result of the penalty dropped the #44 car from the top of the timesheet down to third place.
The #8 Starworks car have problems with bodywork after the car straightlined the bus stop chicane, damaging the rear bumper. The team would pit the car in an effort to try and fix the damage. After a lot of pulling and sticking the care resumed to the circuit.
Don Kitch in the GT had an off at Turn 5 but thankfully didn't need recovering enabling the field to race on as normal rather than forcing another caution period.
As the hour closed out Richard Lietz was closing in on the lead #59 Porsche of Andrew Davis as he looked to get back on to the lead lap.
50th Rolex 24 at Daytona DP class standings after Hour 18
1. #60 Michael Shank Racing – Allmendinger/Negri/Pew/Wilson
2. #01 Chip Ganassi Racing – Hand/Pruett/Rahal/Rojas
3. #8 Starworks Motorsport – Dalziel/Luhr/McNish/Popow/Potolicchio
4. #6 Michael Shank Racing – Goncalvez, McDowell/ Nasr/Yacaman
5. #5 Action Express Racing – Donohue/Fittipaldi/Law
50th Rolex 24 at Daytona GT class standings after Hour 18
1. #59 Brumos Racing – Davis/Haywood/Keen
2. #67 TRG – Bertheau/Bleekemolen/Goossens/Henzler/Pumpelly
3. Lieb #44 Magnus Racing – Lally/Lietz/Potter/Rast
4. #57 Stevenson Motorsports – Bremer/Edwards/Liddell
5. #63 Risi Competizione – Bruni/Fisichella/Matos