Changes? Oui, oui, monsieur . . .
I no longer think QS, Pennzoil, Valvoline, and Mobil are the only brands worth considering. All these years I've been ignoring Chevron, Havoline, TropArtic, and Exxon Superflo!
I've tried mixing different grades of oil to get (I hope) the benefits of each. If there's no gain, hey, it's fun.
While I'm not a stasher, I stock up at least one oil change in advance in an attempt to beat some of the next price increase.
I'm pushing my OCI further out from the traditional 3K miles/3 months, and balancing the cost of a synthetic change 1 to 2x a year vs. dino 2 to 3x a year. They'd come out about the same, since (thanks to BITOG) I spend less on each dino quart while still getting the same or better value.
-- Paul W.