What Spark Plugs and Wires would optimize my MPG? 2000 Bonneville SSEI
AC Delco plugs wires. Using substandard low end aftermarket cheap junk doesnt help your vehicle at all also replacing spark plugs wires really doesnt improve your MPG unless its misfiring badly
any plugs + wires will help the mpg a bit if the plugs are gapped correctly before installation
