2007 Chevy 2500HD Crew mileage
Hi every one. I just completed a 567 mile round trip and the mileage was around 7.4 mpg. Empty around town or highway, im seeing 11 mpg. I'm starting to wonder if new plugs and wires are in...
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Any over 100k I would change out the O2 sensors for sure.
That are a major player in fuel economy.
That are a major player in fuel economy.
