HFS4 Ethanol question

[grozni]

Hello,

It's hard for me to obtain methanol at the moment. I'm trying to find alternatives. I've attached picture of 96% Ethanol I can buy almost everywhere. Also 70% is available. My car was mapped for 50:50 methanol mixture. Please advice is it safe to use ethanol for some short period, which one 96% or 70% and should I use mixture or pure? In case of mixture with distilled water which percentage to use? Thank you