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pcv was changed 17k miles ago and I did check it this morning. I will take a look at air filter and probably replace it today.

....or possibly a little of both. Truck has always run great and still does.

What I wonder is did my engine produce more contaminants during this last oci because of my driving this time around or did I unknowingly do an "Italian tune-up"?

Yes, I just checked and air filter is sealed up tight still. I didn't just inspect it but it was changed about 17k miles ago. I drive solely on pavement btw.

I moved next to a new neighbor 5 years ago. He has same truck except 2002 with 493k miles on it. I rode with him on highway once and was shocked to see his odometer and how his truck was running so strong at 90mph all the way to Miami. I had to get myself one.

No silver chunks or shavings thank heaven.

I've been reading for years and just joined today because of a surprise during oil drain this morning. I drive a 2001 F-250 5.4l with 215k miles. I run Mobil 1 5w40 with Motorcraft filters. I do oil and filter changes faithfully every 3,000 miles. My typical driving during oci consists of...