| >A search on the internet yielded a lot of information on premature | >differential failures, with widely varied results, and a couple of TSBs from | >Ford (05-12-6 and 05-23-3) dealing with the issue. The TSBs cover Explorers, | >Expeditions, Navigators, F-150s, Aviators and Mountaineers, built between | >1997 and 2005. The TSB touts a number of kits, depending on year and model, | >and an upgrade from 75w-90 to 75w-140 synthetic lube. | >
| >My local Ford dealer has quoted $1000 to install this kit, and gives a 12 | >month/12,000 mile warranty on the repair. We are very happy with the | >vehicle, which is in pristine condition otherwise, and has always been very | >well maintained since we bought it new in late 04. | >
| >My question is this. If the differential is my problem, either now or in the | >future, what are my odds the repair will be successful enough to provide a | >differential that will last another 200k miles? | >
| >
| The repair didnt fix mine. It just moved the whine down from 50-60 mph | to 25-30 mph. |
How many miles before the noise came back? Did you have a warrantee on the repair?