I just recieved my latest oil report. This will be #3.
1st: Iron was high, Silicon was high Insolubles at 0.3%, every thing else was good (3,200 miles on Rotella)
2nd: Copper was high, TBN was good for an extended change Insolubles 0.4% (4,900 miles on MOPAR oil)
3rd: every thing evened out Viscosity was low (10W-30 range, 63.5/11.19) fuel dilution went up to 3.5%. There was alot of low speed driving on that oil, TBN 3.5. (4,700 miles on MOPAR oil)
At the last oil change I was in need before a long trip and Rotella was used. I try to get the dealer to do the oil changes ($49.95 including filter, not to bad) This time I also bought fleetguard filters for it. I have not added any oil to it and it does not appear to "make oil", the level is the same when It gets changed as when it was when it left??.
I think the money invested in the oil sampling is a great value I now have 18K on the clock.

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07.5 3500 Quad, SRW, 4X4, Laramie, Leathered, Dark Metallic Gray, 6.7, 68RFE, 20K Reese, Ride Rite's, 2 Viair air compressors, Bully steps, Kleinn Locomotive air horns (5 in all), Billet polished locking fuel door, 'A' pillar mount Auto Meter Pryo, PML X-deep trans pan
06 Durango 285 RL 5'er Lifted by KZ