my grill block (Full upper) using clear packing tape has raised my temp by 11* to191* max on scangauge harder to see on stock gauge . this is still below the 200*-210* that I believe is optimum. my resent trip back home at 60mph netted my best mileage to date of 22.12mpg if I can tow at 16 mpg I'll be a happy man.
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