In the world of upgraded and redesigned pickup trucks, new vehicles normally do not get a new powertrain at the same time. This was not the case with the redesigned-for-2016 Toyota Tacoma; it received the 2GR-FKS engine — a 24-valve V-6 rated at 278 horsepower and 265 pounds-feet of torque. Though new to the Tacoma platform, it wasn’t an all-new engine for Toyota. The 2GR-FKS — an Atkinson-cycle engine — is part of an engine family found in a range of other Toyota and Lexus vehicles such as the Toyota Highlander and Sienna, and Lexus GX, RX and LS. Its distinguishing characteristic is the ability of the intake valve to stay open longer than it does in other engines. That causes some of the air/fuel mixture to be pushed back into the intake manifold, allowing the engine to burn less fuel than a normal engine. However, the downside to the Atkinson cycle is that having less fuel in the piston cylinder chamber means the engine provides less power. Atkinson-cycle engines are most often paired with electric motors in hybrid vehicles to make up for the resulting power deficit. Toyota first used a variation of this engine in the 1997 Prius; now the technology is creeping into othe...