Re: Ethanol vs premium

[shoestringmariner]

I had read that premium was a slower burn and that it could lead to more carbon buildup and lead to harder starting.

It seems that around here, only the 91 octane contains no ethanol. I thought Shell fuels were all non-ethanol, but I have since read that that is not the case due to the fact there are only 4 refineries in Canada, so all unleaded and mid grade contain up to 10% ethanol. I dont know if that is accurate or not, but I’ve noticed not all stations list on their pumps whether ethanol is present or not, so I suspect it is present.

For me its not about cost, its about performance and longevity. I assume premium is the lesser evil?