In regards to gasoline sold here in Alberta, are all the premium 91 grades ethanol free, or is it station dependent on whether that is mixed with ethanol? Im guessing that the 87 grades always contain 10% ethanol due to government laws.
Havent really payed much attention to this until picking up my 2.0T Genesis Coupe which is my first turbo car. Been filling up with regular and it runs fine, just wondering if premium 91 would be worth it (engine is rated for 87, but adjusts timing for 91). Seems that most new cars are rated for up to 10% ethanol, but over the long term...is it really safe?