Roush Fenway Racing lost three engines during the race, including points-leader Matt Kenseth’s. In addition, five Toyota teams had to go to the rear of the field after changing their engines.
Doug Yates, who oversees the Roush-Yates engine program indicated that a more conservative gear ratio could have prevented the problems.
Kenseth and teammates David Ragan, and Carl Edwards all experience engine problems, but their issues were all different. “Matt Kenseth had a piston problem in the first five laps, David Ragan lost a valve spring before the 100-lap mark and Carl Edwards lost a rod bearing on the last lap.”
Those problems were different from the ones Toyota experience.