I just had my first engine oil analysis done after switching to 15w40 Amsoil diesel oil. The oil had 7,500 miles at time of analysis with fresh filter installed and topped with fresh 15w40. I am going to try to make the 15k mile interval for changing the oil. Here are my results:

IRON:51
CHROMIUM:1
NICKEL:1
ALUMINUM:5
LEAD:16
COPPER:54
TIN:1
SILVER:0.3
TITANIUM:1
SILICON:11
BORON:1
SODIUM:5
POTASSIUM:10
MOLYBDENUM:5
PHOSPHORUS:1394
ZINC:1537
CALCIUM:3693
BARIUM:10
MAGNESIUM:18
ANTIMONY:30
VANADIUM:1
FUEL SOOT:0.1
VISCOSITY:14.3
GLY:NEG
TBN(C):7.52

A lot of this is really new to me but figured it would be good to keep up with periodically. The only thing kinda wrong is the copper number. The oil analysis company said "ABNORMAL COMPONENET CONDITIONS" Oil is suitable for continued use. Additional sampling is required to monitor and evaluate this condition.
I plan on doing another analysis with the oil at the 15k interval and then seeing what it is. This was also my first analysis from switching from reg. oil to synthetic oil. I also put on the airraid intake pretty close to the time of the synthetic swap. For refernce the truck is a 2003 cc d/a 4x4 with 45k miles. Let me know what you all think and what I should or should not do in the future. Later Nate:ro)

Why not take advantage of one of the site sponsors, and have either a particle count or ferrographic oil analysis done which gives you a microscopic photo of the crud in the oil. George at http://www.avlube.com can help sort out what all the numbers mean too.
The iron looks a little high, but might be nothing more than the synthetic oil cleaning out old built up stuff. You will see if it remains the same or goes down with the next oil change.
A particle count on the copper would be useful to see if you are grinding up something, or just leaching out copper from something.

The numbers are high. I would run the new oil just a few hundred miles and dump it out hoping it removes the metal particles. The wear numbers should be in the single digits. Copper and Iron are abnormal for sure.

Hi Nate---First of all, did you flush the motor with amsoil's flush before you changed the oil out? At what miles did you change to amsoil? The amsoil you put in the motor-15-40 diesel/marine is with out a dought the best lubricant you could have chosen. I would run to 14 or 15000 and then change the filter and oil--send in a sample then for analysis--remember to take the sample the same way each time!! If you take it from the oil pan when you change the oil, be sure to kleen that area before you drain, as to NOT get crap in sample!! Let it drain for about 8-10 seconds before you take sample--this is to be sure you get a true sample of oil with suspended particals for a true reading!! A fumoto drain valve would come in handy-instead of you oil pan plug!! You could purchase one from Greg Landuyt--he is a sponcer on here--lubespecialist.com before your next oil change!! Are you using the amsoil sdf-52? Im sorry this a bit long winded, but It's ever impotant that this is done right the first time!!!!!!!! I probably forgot something-but i dont think so--any questions?? Oh yes--call and talk to the guys where your having analysis done--they can explain what numbers MEAN!!! Take it one step at a time!! Your doing it the right!!

Greg Carter Vermont

If I had results like that, I'd change it out and get to a point where my analysis numbers were "normal" before trying to go for an extended drain interval. If you have your oil analyzed on a periodic basis, it will tell you what is "best" for your particular truck and application. The following results are from when I was at 41,000 miles with 7,500 miles of use on oil and no make-up oil added:

Aluminum 3
chromium 1
iron 8
copper 6
lead 5
tin 0