Here's an UOA I had done awhile ago. I found it interesting that Ford now recommends 5k OCI but looks like my truck will not make that mark. Let me know what you think. Blackstone Report: No problems showed up in the initial sample from this engine. All wear read right around averages after 3,783 miles use on the oil. Universal averages show typical wear from Ford's 5.4L V-8 engine after 5,600 miles use on the oil. Silicon was average at 10 ppm, showing no problems with the air filtration/induction system. The TBN read 2.2, showing some active additive left, but not a lot. 1.0 is too low. We like the oil use interval of ~3700 miles for the way this engine wears and suggest sticking with it for now.
2005 Ford F150 5.4L 3valve OIL Motorcraft blend 5w20 Fliter: pure1 MILES IN USE 3783 MILES 23,050 SAMPLE TAKEN 4/27/07 ALUMINUM 3 CHROMIUM 1 IRON 22 COPPER 2 LEAD 0 TIN 0 MOLYBDENUM 43 NICKEL 1 MANGANESE 0 SILVER 0 TITANIUM 0 POTASSIUM 0 BORON 215 SILICON 10 SODIUM 3 CALCIUM 1975 MAGNESIUM 30 PHOSPHORUS 704 ZINC 826 BARIUM 0 INSOLUBLES 0.2 WATER 0 FLASHPOINT ºF 380 SUS VIS 210ºF 50.3 cSt @ 212ºF n/a