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Old 09-20-2014, 01:56 PM   #7 (permalink)
Cobb
Master EcoModder
 
Join Date: May 2012
Location: USA
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I got a block heater and notice 0 effect on mpg. Next to that would of been doubling my starter battery capacity from 35 to 70 amps. Using heel fuel additive didnt help any. Going for cheaper gas actually lowered mpg.
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