Octane rating..Circa1970

[3macs1]

I only know from 77 on and I think it was not even 94 maybe 87 by then. L-72 hated it, retard the timing and eat plugs, worse in hot weather. However Saturday night was time to eat Dodges and almost all of us kept a drum of avgas behind the barn with a pump.Thinking back it was hard to imagine but true we would go out the the airport and they would fill your drum. No problem. Like to see that today.L-72 liked avgas very much and hated dodges.
We tried that 104 additive many times but it never seemed to make a difference. Maybe just me