Problem with most oil change places is that they do not check fluid levels at all and I have seen it.I seen one Ford f150 with a Mazda 5 speed manual burned up beacuse an oil change place did not check it at all and had a cup of fluid in it.Had to replace the carrier bearings and gears in one Durango rear end,dealership did not check the rear end and burned the gears up,carrier bearings.It could be low on fluid and possibly burned up rear end.