okay so note to self, I guess Costco is one of the ’good’ 93’s. I have a membership, I guess I just thought they had cheap gas due to cheap additives when really it’s just cheap because they make up for it with membership fees and the fact that they sell just about everything and they’re expecting the customer to do ALL of their shopping there.Sorry, too late. Costco is Top Tier gas and has been tested at full octane at stations across the nation. Their gas is also the freshest as they turn over their tanks faster than anyone else out there.
OK, I’m done now.