Over the past four to five years, a lot has been written about the shift away from big-bore 15-liter engines to medium-bore (11-liter to 13-liter) engines. This was particularly true among truckers looking to minimize fuel costs.
New data shows that many of the industry's trend-setters have discovered the truth in the old saying, "there's no replacement for displacement." They've come to understand the benefits of new technology in the big-bore engines, and have been making the switch because it saves them money. The comeback has been dramatic.
Max Heine is editorial director of Overdrive and writes regularly for the Overdrive Extra blog. A CDL holder, he joined Overdrive in 1998 after more than two decades of newspaper work. You can reach him at
firstname.lastname@example.org or 205-248-1038.