First UOA of my '08 RX400h. Hybrid with 3MZ-FE engine. Lab was ALS. Oil was in service for 6 months, mostly city / suburban driving. Quaker State QS-3614 filter. Drained and refilled with same oil, and Mahle OC-338 filter.
I'm into the Citgo for about $.70 - $1.25 per quart AR. Quaker State filters about $1.50. I could probably extend the OCI on this vehicle, but I think I'll just save my UOA money and stick to factory intervals of 5k for <$10 per.