If that second column of numbers is correct, then that SJ Proline 5W30 has a somewhat strange additive pack. I've seen all Calcium systems, all Magnesium systems and mixed Ca/Mg systems which are roughly 1:1 but nothing that is 1:4 before.
Also the combined Ca + Mg at 1000 ppm looks very low. Ca & Mg detergents tend to stay put in the oil regardless of how long you run the oil so this low figure would give me cause for concern. The implication of a low combined Ca + Mg number is that the oil started its life with a low TBN. And here's the rub. The only time I've seen Copper numbers rise by this magnitude is when you have acid attack as a result of total loss of TBN and AO control. However this is inconsistent with the fact that your used oil still seems to possess some TBN reserve and the KV100 is on-grade (if you had lost all AO control, you would expect this to rise tenfold).
There's one other possibility that comes to mind. Back in the late-90's, Paramins (the then Exxon lube add company) was big on Copper antioxidants. I only know this because there was a big legal bust-up with Exxon successfully suing Lubrizol for infringing its Cu AO patents. This is an SJ oil so may well be blended with some old, obscure DI pack which may possibly contain Copper. If this is the case, then you have nothing to worry about because the Copper isn't coming from your bearings or radiator but was in the oil from the moment you added it.
SoJ and Ultrafan:
Thanks for your informative replies....these are the kind of posts I was hoping for. I have a half qt. of this Proline oil left so I may do a virgin UOA to see if it contains copper.
Prior to the Proline I ran an older SJ rated '76' brand 10w30 (last summer). As you can see, it may be part of the reason for the 1:4 calcium/magnesium ratio.
This is what Terry Dyson said about the 76 oil several years ago:
"For the fella that was interested in the 76 lubes older formula we tested. Relies on dipserants and not detergents for longevity. Lab was Amsoils old OAI lab.
V100C 10.6 cSt
Interesting oil and it performed well in a 2.9 I 6 Volvo S80 test engine."
PS: This Elantra doesn't use any oil in the my typical 5 to 6K run...because I never know how many miles to expect from my daughter, I plan on using synthetic from now on as a precaution.
Thanks again guys.