TOPIC: 91 Octane Ethenol Free?

Good day. Looking to fire up my '59 Mercury MK58A. Do I need to use Ethanol free gas? 91 Octane OK?
Please let me know your thoughts.

don't need to but better on the rubber parts. 87 octane is fine

Awesome. Thank you. It is actually hard to find eth free gas here.

just run the motor dry when finished for the day . disconnect the fuel line and run till it stops the try with choke till it stops. I have done this since the mid 50's with all my motors no problems.

Dave is right about running the gas out at the end of the day BUT this motor needs 91 octane non oxygenated fuel or greater period! I have worked on motors for 40+ years and corn juice is bad news to outboards. It eats up fuel lines and sends chunks of rubber into the carbs much less eating up the carbs too. This motor was made back in the day when 100 octane fuel was common. If you run anything less than what I recommend you will have nothing but problems down the road.

Thank you. I am using 91 octane ethanol free.
Cheers.