Originally Posted by westxsrt10
I have a laser type thermometer...it read 285F, so i'm sure it was hotter while towing (the rotton dead smell occured too).
A reg. cab. long bed, 3.96 gear, 17" wheel, Hemi truck says it can tow 10,250lbs. I'm hoping to find the specs. for my truck?
Although I'm not aware of a heat spec on a rear diff, that is abnormally warm and probably destroyed your oil. I would change to a synthetic and be sure you're using the 75w-140.
It could be your gears are not meshing correctly or have not broke in correctly. If there is any "clicking" when you put it into gear or a vibration when driving I would take it to the dealer and complain. Heck, just take it in a say it started roaring when you were towing and your thermometer registered 285+ just to get them to check the gears. With a 2010 you should still be under warranty. You can also look at getting a finned aluminum cover.
Here are the 2011 specs. They should not be too different are weight ratings are just a numbers game for truck peter measuring contests anyway. http://www.dodge.com/bodybuilder/201...ammlup1500.pdf