Quote:
Originally Posted by FrankL
So what gas and octane do you put in your BMW? I have a Marathon station close by and they sell a 90 octane no ethanol gas. I have been using 89 or 91 octane from usually Shell station.
|
The advice I've been given is that you shouldn't go back and forth between Ethanol and Ethanol-free gas, as it will result in moisture in the gas tank. If you always have access to higher-octane Ethanol-free gas, then that's the best possible scenario. I don't have that option where I live or drive, so I do my best to fill up with Top Tier gas. Costco is my #1 choice, but the closest one is 30 minutes away so I'm often at Wawa.