Doesn't California also require custom blends for its gasoline, which also tends to make it more expensive? My understanding is that only refineries in Califor

Doesn't California also require custom blends for its gasoline, which also tends to make it more expensive? My understanding is that only refineries in California make them, which prevents out-of-state gasoline from being imported to help supply quickly match increases in demand. https://www.latimes.com/business/la-fi-gasoline-manipulation-infobox-20150706-story.html https://www.latimes.com/business/la-fi-gasoline-manipulation...