notice every winter mpg in the denali goes to crap...tank of gas usually last 1.5 weeks on average. winter time / cold time im lucky if i get a week out of a tank. could this be from being tuned? just curious
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notice every winter mpg in the denali goes to crap...tank of gas usually last 1.5 weeks on average. winter time / cold time im lucky if i get a week out of a tank. could this be from being tuned? just curious