Just got my report back. I've got a 2004.5 with 63K on the clock, running Amsoil 15W-40 Heavy Duty Diesel and Marine, with Amsoil Dual remote by-pass system.
I have 11,312 miles on this sample. We have been doing 10K drains because of the high copper levels that most are aware of. I could of left the last batch in but decided to see it one last time. Now things have stabilized and we will be keeping this in as long as we can. The filters are the new Amsoil Nano Fiber filters for both air and full flow oil and bypass.
We tow our 5th wheel with it as well as other trailers. We do a far amount of hiway miles and the balance is city and rural.
Iron 9
Chromium 0
Lead 12
Copper 18
Tin 0
Silver 0
Silicon 8
Soot .01
TBN 9.75
OX% 5.0
NITR% 7.0
VIS 15.1 (Range is 12.5-16.3 it starts out new at about 14.3)
As you can see their is know reason to dump it. Next sample will be at 20K miles on the oil and we will be changing the full flow filter as well.
Greg