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Old 12-26-2017, 05:15 PM   #9 (permalink)
Ecky
Master EcoModder
 
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Join Date: Dec 2011
Location: New Zealand
Posts: 5,141

ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)

Oxygen Blue - '00 Honda Insight
90 day: 58.66 mpg (US)
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I've tried both in cars I've owned and the difference disappears into background noise. On paper, there's an approximately 5% BTU difference, which should work out to exactly 1mpg in a 20mpg vehicle.
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