Feel the difference with AT
 

I recently fill up with the 91, the car was smoother that b4. I was kinda of cheap cuz I always use 87 due to the high price gas.

Feel the difference for yourself!!

Dude all I use is 91. She's ma baby I have to!

Some do better on 87, some on premium. Mine's a premium lover. I can use 89, and I do in the colder months, but it's 93 octane in the summer (take no chances, as I've pinged on 89 in the heat (95+)). The difference between cars is odd. Must be varying factory tunes.

Thats all I use ,is 91 octane.
She no like anything else.
So I give her what she wants!

i dont think it has any relation to being an auto.

I agree so I am closing this thread...