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Cruising on 4 cylinders

by Christine & Scott Gable
for About.com

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2008 Chevrolet Silverado LT2 Flex-fuel

15 of 18

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2008 Chevrolet Silverado 1500 LT2 4X4 flex-fuel V-4 mode

This is what we really love about the 5.3-liter V-8. GM's Active Fuel Management (cylinder deactivation) shuts down four cylinders under light load cruising. Here we are cruising down a back road at 40 mph, pulling down 36 mpg on four cylinders.

photo © Adrian Gable
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