Side gapping spark plugs can slightly increase horsepower and improve fuel efficiency. However, this DIY mod comes with a major downside for longevity.
During my recent visit to the Chrysler dealer, they suggested that I replace all six of the spark plugs. The car has only 23,000 miles on it.
Spark plugs are made from many different materials. Ruthenium spark plugs are able to offer some different benefits from ...
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