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Old 07-22-2016, 10:28 AM   #161 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
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Great data, I love to see graphs and charts. Seeing this, I'm inclined to believe that even plugging the block heater(s) in for 20 minutes is not insignificant.

EDIT: During the last Vermont winter, I found that my fuel economy would steadily rise for the first 30-40 minutes of driving, despite coolant temperature peaking after only 5-10 minutes. Presumably, other things such as the transmission, axles, tires, etc. were still warming up.

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