Commercial trucks use the inline-six configuration because it's not a space limitation, allows them to run a big stroke which means more torque, it's mechanically simpler and more reliable than a V engine, offers improved bearing space and load for the crankshaft and connecting rod bearings, and it's inherently balanced, which means it doesn't need balancing shafts. Check out our website: dustrunnersauto.com Follow me on Instagram: @bryce.cleveland Gear I use to shoot my videos: (Buying through these links supports the channel) Panasonic G7: https://amzn.to/2FKsmKe Panasonic 25mm F1.7: https://amzn.to/2X8LQhG Rode Mic: https://amzn.to/2J0lrik Tascam DR05: https://amzn.to/2LvYFjR Neewer lights: https://amzn.to/2Xem68x - Disclaimer - This video is fair use under U.S. copyright law because it is transformative in nature, uses no more of the original than necessary and has no negative effect on the market for the original work.