There is no E90 in the states - that would mean 90% ethanol and 10%(or less) gasoline. However, I know what you meant.Does anyone know if Masers are ok with e90 (ie up to 10% ethanol?). It is about $.75 a gallon less expensive here for the same octane rating.
I live in Calgary too so I know all about $100 fill ups. As far as fuel economy is concerned, the car is definately not for the meek. Mine uses about 1/3 tank per hour when driving hard.In Calgary, we are at $5.03 per gallon for 91 octane. Thankfully, Maseratis are real fuel misers