Just a few simple tips can help owners of Chrysler Group engines with Multi-Displacement System (MDS) get the most fuel mileage possible from their 5.7L HEMI® V8 engine.
The customer does not need to drive in a certain way to realize a fuel economy improvement with MDS, but these driving habits can maximize their fuel savings with this technology.
--Keeping speeds to 65 mph or below - MDS uses four cylinder mode most at these speeds.
--Use cruise control -- this helps maintain a steady speed, generally allowing the HEMI to run on four cylinders for longer periods.
--Accelerate more gradually - the HEMI will provide V8 power whenever it is requested by the driver.
--Use a steady throttle whenever possible - this maximizes four cylinder mode.
The Chrysler Group MDS is standard equipment with the 5.7L HEMI on seven vehicles: the Chrysler 300C, Dodge Charger R/T, Durango, Magnum R/T, Ram 1500 and Jeep Grand Cherokee and Commander.
With the addition of MDS to HEMI-equipped Dodge Durango and Ram,
MDS-equipped vehicles through the end of the 2007 model year is projected to save more than 60 million gallons of fuel each year.
The Chrysler Group MDS alternates between four-cylinder mode when less power is needed, and V-8 mode when more power from the 5.7L HEMI engine is in demand. This optimizes fuel economy when V-8 power is not required, without sacrificing vehicle performance or capability.
Chrysler Group was the first to offer modern, large-volume vehicles in North America with cylinder deactivation - the HEMI-powered 2005 Chrysler 300C and Dodge Magnum R/T went on sale in the of spring 2004 with the Chrysler Group Multi-Displacement System, or MDS.
Chrysler Group was also the first to offer cylinder deactivation in an SUV with the introduction of MDS in the 2005 HEMI-powered Jeep® Grand Cherokee. Chrysler Group is the first to offer MDS in a pickup truck - the 2006 Dodge Ram 1500.
MDS is a fuel-saving technology that is here today - customers get the power and capability of the HEMI V-8 that they desire with the fuel economy of a less powerful engine.
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