Neither of which have anything to do with the OP's situation. Phase separation takes a long time to occur, especially in a full tank.Low octane or stale fuel will cause detonation or "pinging", if its bad enough it can cause top end damage to the motor. I use the highest octane non-ethanol fuel I can find and as a back up I have a can of 104 racing fuel to mix in just to keep the ping away. Ethanol in the fuel does accelerate the degradation of the fuel which results in the octane level dropping.
You could upload your video or audio recording to a google drive and paste the link in a post here.Can i send a vid/audio? Nope i dont have that tech im afraid. As for people being against Ethanol, thats fine if you run a modern bike and want to use crops that people coiuld eat, very different if you have vintage Bikes as i do. To me its the Devils work
I would presume that there is an octane difference to E5? If so would the ECU not compensate for this?
I've not used E10 yet and will likely try and avoid it if easily done. I use supermarket Super unleaded if it is available. I have had issues in the past with poor fuel from supermarkets but couldn't honestly state that it wouldn't have happened at regular petrol stations.I recently filled my 9T with supermarket E10 fuel and noticed immediately afterwards what seemed like Pinking. This was under load accelerating. Is this possible? Would the ECU not adapt to a poorer fuel? Has anyone else come across this?