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Old 08-17-2009, 04:54 PM   #3 (permalink)
Bicycle Bob
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Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,674

Appliance White - '93 Geo Metro 4-Dr. Auto
Last 3: 42.35 mpg (US)

Stealth RV - '91 Chevy Sprint Base
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Truckers don't choose to drive slower on hills, they just have limited power. Car drivers using DWL don't back off on hills, they avoid or minimize increasing throttle openings. A constant speed uses the least energy for the same average speed, but hills can work as an energy storage device, letting you choose more efficient engine loadings. Diesels are at their best at full load, if well adjusted.
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