No Kool-Aid involved.
I don’t know about California; but, here in Canada, we need seasonal and regional blends. For instance, in the far north, where temps of 50 below aren’t uncommon, cars won’t run well (or at all) on summer blend. The winter blend includes lots of butane (among other thongs). You won’t find much butane in summer (or SoCal) blends. Took much of it would simply boil off from the fuel tank. Similarly, mountain blend is different from sea-level blend, because boiling points vary by air pressure.
Thongs = things.
Sheesh — must always spell-check auto-correct.