|Check out this slippery T680. (Photo by Jami Jones)|
Some of those tweaks are obvious; some details you kind of have to look for them.
So there are the longer side extenders, lower cab fairing extenders for the 76-inch sleeper and front air dam. Then there are those aerodynamic mud flaps, even some optional wheel covers for drive tires.
The goal is to get as much as 5 percent more fuel efficiency. Kevin Barry, chief engineer, says the T680 will do that by May.
KW is chasing that 5 percent by combining the Paccar MX-13 engine, Eaton Fuller Advantage transmission, a Meritor 6x2 axle configuration and wide-base tires.
I’m not a fan of speed governors on all trucks, so their speed control management that utilizes speed limiters isn’t my favorite fuel-efficient feature. But the tire pressure monitoring system is neat, keeping tires at optimum PSI.
The new Kenworth Idle Management System, which provides 8 hours of A/C without idling, saves you about $4 an hour.