240k on truck - UOA at 5k OCI

[bismic1]

240k miles on engine. apprx 5k miles on oil. Mobil Delvac 1 ESP 5W40

4	Aluminum
1	Chromium
25	Iron
1	Copper
1	Lead
0	Tin
38	Molybdenum
0	Nickel
0	Manganese
0	Silver
0	Titanium
7	Potassium
83	Boron
4	Silicon
2	Sodium
1078	Calcuim
904	Magnesium
1093	Phosphorous
1207	Zinc
0	Barium
66.8	SUS vis at 210 F
12.1	cSt at 100 C
430	Flashpoint
<0.5	Fuel
0	Antifreeze
0	Water (Karl Fischer)
0.2	Insolubles

2006 F250 6.0L PSD CC SB FX4

 

[bismic1]

Imagine that, 5000 miles on a 5W40 oil .... and the 12.1 viscosity is still higher (not by much, but it is) than Rotella 10W30 oil that starts at a 12.0! So much for the RAPID shearing internet posts!