I have
NEVER heard an engine failing because of using higher octane than required...
The opposite (lower octane than required) has caused many accidents.
All I heard is, that higher octane burns spark plugs more frequently.
Look what it says in your pilot manual, or call the engine manufacturer.
xxx
Long ago, I used to fly lighplanes requiring 80/87 octane "red color" gas.
I recall having to fill tanks with 100 LL or 130 "green color" gas.
Never tried the purple 130/145...
I doubt you can get to FL 450 with a J-3C even using 130/145...!
xxx
Same thing with your car. Use low octane gas if it only requires low octane.
If you require higher octane, use premium or extra whatever they call it in your country.
It will not harm your engine. But "higher octane" will NOT GIVE YOU EXTRA POWER...
xxx
Va va voom -
Happy contrails