I sent in my first oil sample for analysis! Super exciting to get the results.
This oil is 5 quarts Mobil 1 FS 0W-40, 1 quart SuperTech FS 5W-30. As described in this thread, the air filter was well overdue for a change, and I ended up swapping it out with another OEM filter at about ~4k miles on the oil. I was curious about silicon levels with an old air filter, but it seems that it was still protecting the engine even past its expected lifespan! Thanks, fella!
Replaced the oil with Valvoline Restore & Protect 5W-30 for funsies. I'm looking forward to seeing what the oil filter looks like after a 3k OCI.