E85 or gas.
NO! As far as I know the Vibe is NOT a Flex Fuel vehicle. If it is Flex Fuel and can burn E85 it will have a label affixed to the vehicle somewhere. Do NOT use E85 in a non Flex Fuel vehicle.
If the car is a Flex-Fuel vehicle then yes you can use E85. If it is not a Flex-Fuel vehicle you cannot use E85. Using E85 will damage components. As far as I know your 2006 Pontiac G6 is not a Flex-Fuel vehicle. Reads your owner's manual to be sure.
No, you cannot use E85 or above in any engine not designed for that fuel. You will damage the engine if you do.
The 2012 Ford Flex runs on regular unleaded.
The 2013 Ford Flex runs on regular unleaded.
The 2009 Ford Flex runs on regular unleaded.
The 2010 Ford Flex runs on regular unleaded.
The 2014 Ford Flex runs on regular unleaded.
The 2011 Ford Flex runs on regular unleaded.
The Ford Ranger , 3.0 liter Flex Fuel Vehicle engine is designed to use " regular " unleaded gasoline , 87 octane , or E85 ethanol , or any combination of the 2 fuels
Only if the vehicle is clearly labeled as "Flex Fuel"!
You don't if the vehicle was designed as a flex fuel vehicle. It can safely burn E85 ethanol. You can burn a mixture of 10% Ethanol in any vehicle.