Title: Have Been The Best
Product review: I have these plugs in my 2007 Ford Focus and have over 60K plus miles on the plugs. They are performing as advertised and have noticed increase power and mpg, and will keep going for many more miles. Replaced them with original equipment Motorcraft plugs, and have noticed on average a LOSS of 2mpg. Will change back to the E3 plugs. I don't understand the low rating of other reviews. Highly recommend.
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