I followed the Honda recommended full OCI (through the OLM) interval for the factory fill in my 2011 Civic. The result was an entirely unremarkable UOA, you can see it
HERE.
As you can see, the factory fill Iron was just slightly more than the subsequent fill and the Al was actually less. Contrary to popular belief, Honda's factory fill oil itself does not contain high levels of moly, the moly comes from assembly lube applied directly to components. The August 2006 Honda Service News says:
Quote:
Factory-Fill Engine Oil Looks Dark? - It’s Normal
At PDI, does the factory-fill engine oil look less
like Texas Tea and more like Oklahoma Crude?
Don’t worry, there’s nothing wrong with the
engine. The engine oil looks that way because of
molybdenum (that’s “moly” for short), a special
lubricant applied by the factory to critical engine
components during assembly.
When the engine is test-run, that molybdenum
mixes with the engine oil, turning it a dark
metallic color often within the first 5 minutes of
running. And just how dark that engine oil turns
seems to vary between vehicle models, engine
types, and engine assembly plants. What’s
really important to remember here is this:
Don’t change the factory-fill engine oil because it
looks dark; just make sure it’s at the right fluid
level. To ensure proper engine break-in, the
factory-fill engine oil needs to remain in the
engine until the first scheduled maintenance
interval.
I realize a Toyota may be different from a Honda, but both my 2007 Subaru WRX and my 2011 Honda Civic have shown enormous quantities of moly in the factory fill, both Subaru and Honda state they just use "regular" oil in the factory and that the moly comes from assembly lube.
