I was told the same by my advisor...check the ethanol level...even if it says up to 10% sometimes they edge that over. Stick with the approved list which is Shell (I will be going there from now on) and we should have no issues. The last sentence is creed as far as I am concerned.
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BMWs run a high risk of not running properly when there is too much ethanol in the fuel. BMW says use anything less than 10%. Anything more and you run the risk of rough running and or a check engine light.
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