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Old 03-04-2016, 10:28 AM   #142 (permalink)
Junior Member
Join Date: Mar 2016
Location: West Virginia
Age: 36
Posts: 1

Ram Year: 2008
Engine: Hemi 5.7
Question Does this improve MPG?
In my 2008 5.7 quad cab, I get about 11.5 mpg around town, 13 or so highway. My truck is all stock except for the toolbox in the bed, but there isn't much in it.

My truck has 48,000 miles and I've never changed the spark plugs. Do you think changing the spark plugs would help the fuel economy? I'm not expecting 20 mpg, but I'd like to see it closer to 15 mpg. Also, when towing my 5,500 lb camper (with weight dist hitch) the mpg drops to around 9. I do live in WV so I don't expect towing my camper through the mountains to get great gas mileage. but I would think 10 - 11 would be normal while towing.

Lastly, can anyone suggest the best plug for my application?
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