You may use the specified spark plugs as stated by the spark plug manufacturer for your make model, engine and year
Sparkplugs are almost universal, because of the way sparkplugs work and the way they are shaped the same, it means you should be able to use "standard" sparkplugs.
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.
E85 or gas.
No, you cannot use E85 or above in any engine not designed for that fuel. You will damage the engine if you do.
Some were flex, but only if you have the flex fuel motor, There will be a sticker under hood and gas door that say E85 approved.
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.
No.