Same on I10. Made the mistake the first time we drove out to see the in-laws when they were snowbirding to not fill up outside of California. Once was enough, we have a set stop now. LOL
I told my wife we should stop at the last station in Oregon, but we were down only a quarter tank after fueling in Bend. We would have saved about $5 by topping off in OR, but we kept going and eventually got gas in Vacaville. If we needed a half-tank, we would have stopped. Still, I HATE giving that $5 to California!