Originally Posted by 7.3Excursion4x4
Can anyone tell me what the black spongy tar like substance on the a/c condenser pipes in the rear of my Ex are? It's is put on at the factory but no one at Ford or anywhere else I've been can tell me what it is. I'm relatively sure it keeps the pipes from sweating.
Thats exactly what it does and helps to keep it cooler. All externally mounted expansion valves (outside of the evaporator case) should be wrapped to work properly. If you need any you can buy some from Napa its part #209491, it comes in a role