I've tried 87 and 91 several times over the past year. My bronco definitely has more get up and go, runs better. And gets better mpgs when running 91 octane. I will be using it when it's available.
These were sent out months ago to those who ordered and received the fe they themselves ordered. They are not sent to second owners or those who bought them from dealerships but didn't order them.
Gatorbacks front and rear. Have worked out phenomenally. Like how the lower half can be easily removed when I need the clearance too. Has blocked the thrown rocks from the tires greatly.