Castrol High Mileage. Years ago I used to dump Castrol 10w30 in everything year round regardless of spec or season. Since I have become quite a fan of HM oils and use them a lot. They have helped with some leakers and I can still find a few that are thick for grade which I like.
Current favorite is Pennzoil HM but I still use Castrol HM in the Concorde.
I purchased a few quarts of QS Defy only because it was on sale for $2. I don't intend to run a straight HM oil in current OCI's. The Defy will just go in as a 6th quart. I need to see some reasonable oil usage or leaks before running HM oils.
The first hm oil was valvoline syn with ml tech in 10w30 for the lexus, currently in it. Bought it because the pp was 2$ more and Valvo has a 6.3 noack+ I have seen uoas that looked to gdoo to be true. I'm glad I did as the vvti is actually a tiny bit more quiet.
Maxlife 20w50, last year. Bought 2 bottles and use it in summer only because it's by far the thickest oil I've used (I don't normally like thick oils) but the 10w30 I was using before seeped too much and made the block look wet!
Got 10w40 Durablend for winter