[BMWMusician]

I know this topic has been discussed 100's of times. I've only been using shell and Exxon (premium/supreme) 91 in my 08 335i e93. Would using Kroger gas or Walmart gas (Murphy USA), etc have any negative effect short or long term to my vehicle? On my daily driver, the sa recommended I stop using Murphy and stick to Exxon, shell, or texaco, and so far things have been good. Just wondering the real facts when it's concerning a E90?

Thanks in advance!