Fuel contamination? Any idea

74360duster said
It's a 2006 Pontiac g6. Driven everday.
Can see the stuff in filler neck where was poured in it.

Well crap. I thought we were talking about a Slant Six or something... with fuel injection and a crowded engine bay, this is going to be a bigger job to clean up. Sorry this happened... be sure to file a police report.