I have a 2016 ford edge 3.5L engine RDU was bad, bought a new one from ebay China version, however after driving about 1000 miles the new one goes bad am trying to find out if a 2.0, 2.7 or a 3.0 differential is compatible with the 3.5, could that be the problem why it went bad. Can someone explain, do I have to buy the 3.5, how does it work and no I didn't change it myself.