Thread: 2015 Mazda 6, easy 40mpg
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Old 06-29-2015, 04:12 PM   #8 (permalink)
solarguy
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Yes, it is still breaking in, and you should see a modest improvement by 9-10k miles.
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2004 VW TDI PD on bio

want to build 150 mpg diesel streamliner.
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