good evening, I just bought a 2006 f150 crew cab with the 5.4. It has 133k miles on it and I have no history on it. What do i need to do first and how can i tell if it has the original plugs

 

If it was mine I'd do an oil change, flush and change coolant and transmission fluid and take a look at the brake pads and rotors. As for the plugs, I don't know how to tell if they're original without taking one out. Maybe someone else has a suggestion there.

 

Original plugs will have a white paint dot on the top of the plug. At 133k I highly doubt they are original. Most trucks need new ones around 80K