Best Spark Plugs for Improved MPG?
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Joined: Feb 2013
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Model: Cherokee
Best Spark Plugs for Improved MPG?
My wife had a 2007 Grand Cherokee Limited with the 4.7L V8, and I'm replacing her plugs and wires at 100k. What are the best plugs out there for improved MPG?
E3, NGK, Pulstar? Any others?
E3, NGK, Pulstar? Any others?
CF Veteran
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Replace with the same as that came out. For what you may save in fuel will not offset the cost of some fancy gimmick plugs.
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