When I was a freshman in high school we had a local station that allowed you to “Dial” you octane.
Wish I could remember the name of the chain.
As I recall you could go from a low of about 85 (For a model T or A?) to a high of 101 (105?) for serious drivers.
I always ran the good stuff in my modified bike.
To this day I am severely PO’d to be forced to buy “Supreme” of only 92 octane, particularly at these prices.
At these prices we should be getting at least 100 octane!
Sunoco.