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Free 91 fuel ... but is it worth it?

Posted: Sun Jul 01, 2018 12:37 pm
by Tony_Whenua
The Mrs gets free fuel from work now but it’s 91 unleaded. Car recommends 95 and some websites are saying yeah and na to using a lower grade.

Any concerns with using 91 in a 2007 Subaru Impreza?

Also read it’s a waste of money running 95 in a car tuned for 91. What were the A12s tunes for? I’ve got my car on 98 but timing is slightly advanced...That’s legit right?