To know for sure what color coolant is in your specific 2006 Jeep, you need to:
* Check the owner's manual: It might specify the recommended coolant type.
* Look at the coolant reservoir: The color of the coolant in the reservoir is the most straightforward way to determine the current coolant color.
* Have a professional mechanic check it: This is the safest option, as they can test the coolant and advise on the correct type to use.
Important Note: Never mix different types of coolant. Doing so can cause serious engine damage.