re: “Name brand” gasoline

I'm 60 and have been driving regally since I was 13. I've always bought the cheapest gas and never had an issue, I usually put 250-300k trouble free miles on a vehicle. Also I never change oil more frequently than 10k miles, again never an issue and all my vehicles have rolled to 250k plus with no issues. Frequent oil changes are a huge scam, but a good money making deal for many businesses.