I have no clue what this is. I was driving and noticed my Jeep starting to overheat. I pulled over to let it cool off. After waiting over an hour I opened up the Radiator cap and found this. Now about 6 months ago I took my Jeep the dealership cause there was what looked like Mud in my coolant. They flushed it and rifled it. After looking at the Service Ticket yesterday I noticed the used a HOAT coolant instead of the OAT. Now I Know when mixed it'll gel up. But would it Look like this? Could It be the head Gasket? Just looking for any Help.

 

If your oil looks like that also I would say head gasket, cracked or warped head. Hopefully its just the coolant. Flush all that crap out of there and refill with the correct fluid.

 

ima say headgasket. mixed coolants usualy crystalize or turn to a gel. that looks like oily froth and thats generaly a head gasket / cracked head