very nice job!! thanks for your reply on TDS forum.
I istalled and Oilguard on my '01, 7.3 PSD and the oil analysis is worth every penny.
It's interesting see how regular air, oil and fuel filter changes affect your oil condition and longevity. On my 7.3 I got to 29,000 miles and oil analysis recomended leaving it in, but I just couldn't so I drained tha pan and re-filled with 18 qts ov Delvac 1. (Every 5k I was changing the full flow filter and adding 2 qts new oil).
Oil analysis (at each oil filter change) before and after verified that the wear protection and acid acceptance levels in the oil were good to go as long as filters were maintained. it also showed the "boost" the additive package got each time 2 new qts were added at filter change. BTW, a FUMOTO drain is a must for easy, clean oil sampling!
Thanks again and enjoy your PSD!!!