I've been running 10% ethanol blend, mandated by the corn heads in Iowa, for years. Haven't really had noticeable problems. Have run it in lawn mowers and small tractors too with little effect or concern.

Now that I'm living in MN most of the time, I can get non-ethanol premium and the E320 and Passat like it a lot better. The Passat 2.0 turbo actually pings on ethanol blended gas when pulling up a hill. Not so on non-ethanol. The E320 isn't as obviously addicted to real gas. But I know she likes it better.

__________________
DS
2010 CL550 - Heaven help me but it's beautiful
87 300D a labor of love
11 GLK 350 So far, so good
08 E350 4matic, Love it.
99 E320 too rusted, sold
87 260E Donated to Newgate School
www.Newgateschool.org - check it out.
12 Ford Escape, sold, forgotten
87 300D, sold, what a mistake
06 Passat 2.0T, PITA, sold

Las Vegas NV