Thread: Heat engine block for efficiency?
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Old 01-13-2008, 12:34 PM   #24 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,541

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 51.82 mpg (US)
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My experience: no more than 2 hours (my small 3-cyl engine = small heat sink, though). YMMV.
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