lets not forget what "octane" really means

it doesnt mean more power for higher octane

octane is merely a way of measuring a certain fuel's tendency to combust when it is compressed.

as of late it has also become synonymous with quality, since the refining techniques used on petroleum distillates (gas/oil/etc) affect the octane and therefore quality of the end product

when i worked at the airport, i used to pump alot of Jet-A and 100LL

Jet-A is obviously for turbines, and it is basically super refined diesel fuel, in fact we used to run the actual diesel engine fuel trucks on Jet-A since there were thousands of gallons always at hand. and they ran great.

Jet-A is also a close relative of kerosene

100LL is actual gas and can be run in a gasoline engine, except for the fact that it has a small amount of lead (LL) in it. This is OK for the internals of the engine, it only causes damage to the O2 sensor and CAT, since these emissions devices contain platinum.

I put 100LL in my engine when i first got it, in a 1/5 ratio with 93 octane fuel and the car was definitely faster. however i got an O2 code almost immediately after returning from the test drive

and then i had to change my O2 sensor

~boom