Notice a lot of stations, especially Shell, now has only the 10% ethanol now. The turbo owner's manual says its ok to use these, but recommends changing to a different fuel or station is some problems they list occur. Use to be that alcohols could damage fuel components but maybe that has changed. What is the word now on these 10% alcohol fuels??

 

In CA and many cities, 10% ethanol blend is the law due to clean air act. The engine and components are designed for it so no worries.

 

E10 is all good for year 2000+ porsches.I used for cayenne and 997tt no problem.Even better than standard fuel if the octane number is higher.