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Old 06-09-2014, 06:53 PM   #15 (permalink)
herp derp Apprentice
Join Date: Oct 2008
Location: Lawrence, KS
Posts: 1,049

Saturn-sold - '99 saturn sc1
Team Saturn
90 day: 28.28 mpg (US)

Yukon - '03 GMC Yukon Denali
90 day: 13.74 mpg (US)
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Originally Posted by aerohead View Post
According to published SAE research,an automobile requires 22-miles of driving at 50 mph to bring all components/fluids up to equilibrium temperature.If road testing is attempted before achieving this equilibrium temp,you'll never be able to sort out what did what from your results.
I found my car seems to mysteriously and indefinitely gain .1mpg or .3% every 4-5 miles I go even after the initial 15miles or so of warm up. I've wondered if it might be from increased rake as the fuel tank gets lighter. Whatever the reason it makes it so I don't think I could pick out results that have an impact of less than about 1% on the vehicle
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