Originally Posted By: fdcg27
Why not do a couple of 5K runs of Ultra and then do a UOA?
This is obviously an engine still wearing in, so you'd expect high wear metals levels, although your second UOA shows much lower iron and aluminum than your first.
For science and because race-car!
Curiosity mainly. Not so much as a tool to run longer OCIs or detect problems. However, it gives me a good idea of what the oil's viscosity will hold up to for my car and how I drive it. I can determine an oil to use though from other peoples' UOA
Originally Posted By: fdcg27
Lead is very low in both of these UOAs.
Does this engine use bearings without lead?
I believe Subaru stopped using lead in their bearings 09. This car should have lead-free bearings.
Originally Posted By: fdcg27
The moly level in your first UOA is insane.
This is either lab error or Subaru used moly coating liberally here and there and used a high moly assembly lube.
1000+ is typical on factory filled WRXs or STIs.
Here is a link to another thread with other WRX/STI owners UOAs. A few factory UOA sprinkled in there.
http://forums.nasioc.com/forums/showthread.php?t=2497181