I was told by the dealer that my car requires 94 octane I had been using 91 before that but I use 94 now. Which is only available at Sunoco here in Canada. Itís not the price I'm worried about itís only a $5 difference per tank but the question is do I really require 94 or is 91 just as fine.
I drive a 06 IS 250 AWD
Also the car starts going crazy with the AVG Tank MPG after i fill up I'm not sure which reading I'm suppose to look at.