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      11-03-2012, 08:27 PM   #33

Drives: e92 M3
Join Date: Oct 2012
Location: Here and there

iTrader: (0)

Originally Posted by M3forMe View Post
So let me ask this. Does anyone know want the extra additives are for California fuel? I know we have our own specific to the state?

Another question. What would/could happen if I ran 85 and not 91? Here is why I ask. My company pays for my gas but only 85. If I don't use 85 then I pay 100% on my own. I drive about 18k a year, you do the math. I am willing to pay my way but wanted to ask if it really would hurt the car.
I wouldnt use the 85..this engine is high compression and calls for at least 91. I suspect if you use lower octane the car will retard timing..but I would still be worried about pinging/knocking