Not with out damaging the fuel system.
No. A 1999 Ram is not equipped to run on E85.
No.
The 2012 Dodge Durango runs on flex-fuel (unleaded/E85).
The 2012 Dodge Grand-Caravan runs on flex-fuel (unleaded/E85).
The 2014 Dodge Grand-Caravan runs on flex-fuel (unleaded/E85).
The 2013 Dodge Grand-Caravan runs on flex-fuel (unleaded/E85).
The 2010 Dodge Grand-Caravan runs on flex-fuel (unleaded/E85).
Maybe, if it is a 2.7L and there is a E85 sticker inside the gas door. If not no, it would damage the fuel system.
Not unless it is a Flex Fuel vehicle. Read your owners manual.
No, it will damage the fuel system.
No, but the vehicle has to be able to operate on E85.
It could be. If it is E85 capable there will be a sticker in the fuel door stating so.