Originally Posted By: ChuckBerry
No, it's the first place to look...what sort of service was your differential seeing? My Ford differential, as far as I know, had no service for the first 180k miles, it was giving me no problems whatsoever, but I decided to replace the current fill (that may well have been factory) with fresh synthetic to massage a little extra MPG.
My Ford saw service as a cop car in Kansas, and then used as a daily driver in New Orleans, and as far as I know saw no severe service (regular towing, high speed driving for long periods of time, etc.)
No its the last place to look. Companies like Ford market their vehicles as zero maintenance, so when uneducated people buy them, they think they will save money as the vehicle does not need regular maintenance. Ford only cares that it last past warranty.
I would look for advice on this forum long before anything from Ford.