Iron and Copper are high for the mileage.The TBN looks ok,but for only 3,000 miles of use,it could be alittle better in my opinion.Then again,every engine wears alittle different than others,some more than others.
I would personally try a PAO based oil like Amsoil ASL or ATM and then send another sample.

I pay just shy of $8 a bottle and I use the K&N Gold oil filter or wix depending what store I'm at.
I havent really checked into Amsoil but from what I recall its fairly expensive around here

your right I probly could use conventional, but I dont really want too. I try not to question if I'm wasting money haha

actually mine being a 2010 was before the "Dexos" requirements, however the wifes cruze requires Dexos 2 which even Royal Purple doesnt have that yet

so you dont think the high iron and copper would be from the new parts? I've currently got Royal Purple in again currently and I'll send a sample on that, repost the results but in the meantime I'm gonna look up what PAO is and Ill check those 2 oils out

Ive basically been experimenting with oils as I go along, I run a different one in each engine and see the results. but until now...I didnt have any analysed so my opinion really isnt worth a damn and considering its based visually just another reason why I have no say.
however within a couple months or so I should have some comparisons!
I've been putting Castrol Syntec in my grandmothers escape since new, and i'll get a sample next oil change
and in the wifes cruze Ive been running mobil 1 since new and i'll get a sample of that

Haha you putting all different brands in each cars!

just trying to see what works.
I ran Rotella T in my 383 stroker from new and wasnt pleased with the bearing wear and sludge
I ran Quaker State synthetic in my 4.3L s10 (bought off my dad) since new and when I had that apart it looked fairly decent but I wasnt to pleased with the valve train noise at about 100K mi
so with my 5.3 and the wifes cruze, why not try a couple of the two top brands. when I had mine all apart for the cam swap the inside was spotless!
and the grandmother runs castrol cause its always on sale at wal-mart :dewey:

My 04 did best on pennzoil platinum.

Good to hear, i havent decide which oil to use ob my 5.3 yet. That helps.

agree my old 4.3 PP was the best for it as it got rid of some of the ticking it had. so thats all my 05 is getting along with a good filter.