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Old 01-18-2011, 05:39 PM   #20 (permalink)
UFO
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Join Date: Sep 2010
Location: Denver, CO
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Colorado - '17 Chevrolet Colorado 4x4 LT
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P&G with diesels may have diminishing returns depending on your average speed. A constant speed will have less aerodynamic loss than a P&G with the same average speed. But again, a diesel is at it's most efficient when delivering 90% torque at it's torque peak.
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