Today, I changed the spark plugs and coil boots on a Ford F-150 3.5L Turbo.
Spark plugs are essential to your vehicle's fuel efficiency.

Links to the parts I used:
Anti-Seize Grease https://shop.advanceautoparts.com/p/a...
Dielectric Grease https://shop.advanceautoparts.com/p/p...
Spark Plugs https://www.rockauto.com/en/moreinfo....
Coil Boot https://www.rockauto.com/en/moreinfo....