]Sorry for a delay in follow up. Other priorities during the holiday season. Just changed out my spark plugs yesterday. Attached are photos of the ones I took out. It has been approximately 3 months since I last replaced them. I plan to take pictures again in about 2 weeks.

 

Also forgot to add, spark plugs are Motorcraft SP-452 BSF44P. And cylinders 1 through 6 left to right in both pictures.

 

It looks like #3, #4, and #6 are burning oil.

Others should chime in.