( No ) according to the 1998 Lincoln Town Car owners manual :
It uses " regular " unleaded gasoline , 87 octane ( unless there is a " premium "
fuel required sticker on the inside of the gas filler door , in which case it is
91 octane or higher )
Yes. An E85 car is called a Flex Fuel car meaning it can burn regular gasoline or E85.
Town and County, No. The 3.3L is the only engine that may have been built to handle E85. The T&C should have the 3.8L
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.
The 2003 Chrysler Town-AND-Country runs on flex-fuel (unleaded/E85).
The 2013 Chrysler Town-AND-Country runs on flex-fuel (unleaded/E85).
The 2011 Chrysler Town-AND-Country runs on flex-fuel (unleaded/E85).
The 2002 Chrysler Town-AND-Country runs on flex-fuel (unleaded/E85).
Yes
A 2000 Lesabre is not designed for E85. While the car might operate on E85 the fuel system is not built for it.
No, but the vehicle has to be able to operate on E85.
Yes you can, infact you will get better Fuel mileage than E85.
It is not made for E85 it is just designed to be able to use E85. You can use regular fuel and it will get better fuel economy in the process.