I live in Texas. The cooling system has been working. Maybe they didn’t burp the system? Would that cause lost in MPG?
Yes, I replaced with the ome
Yes, exactly the same plugs
With mild weather ahead the fuel economy will improve, it is during the extremes of summer and winter when people complain about fuel consumption.
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Month old thread and the person still has not said how they check the MPG and what the difference is .