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what is the best spark plug to improve gas mileage?

Oct 03, 2011 by SickPuppy | Posted in Maintenance & Repairs

I have a 1998 Ford Escort SE 2.0l 4 Cylinder... E3 looks pretty sketchy and they sound cheap, so I don't want to buy those, but I definitely need new ones (150,000 miles and they PO did a crappy job taking care of the car)

Denso Iridium Power Spark Plugs - The Best For Your Car

Usage of Denso Iridium Power Spark Plugs in your car

Limit Pushing - Pulstar Spark Plug Test

Well...as far as power goes...they work...... More tests will have to be done on gas mileage but they do increase power at least on my Celica GT ...