I just got my challanger back from the dealer. Brought it in in Dec because of the howl from the rear end. Took the dealer this long to get the new part in. Quite now.
my 2011 has 6k miles on it howls under decel also told my service advisor and i was told that the car needs a break in period and my noise isnt loud enough to repar oh and the rear end tech says if misdaignose the problem the dealership will have to pay for the repair
still under factory warranty life time warranty and 100k mile power train warranty.
2011 r/t 6spd all stock any help??????
Thanks for this input, - I'll try it this weekend (I planned on changing my fluid again before putting it up for the winter).I had a slight whine under light load at exactly 60mph, basically when cruising. I drained the factory fluid and put in Mobil 1 75w90. Noise from the diff is completely gone.
None is required, the Mobil 1 75w90 is an "LS" fluid so it already has the correct additive/properties.Thanks for this input, - I'll try it this weekend (I planned on changing my fluid again before putting it up for the winter).
Q: What type/brand, and amount of friction modifier did you put in with the Mobil 1 75w90 ?
PS: I have Royal purple in it now. Made ever so slight difference, but hard to tell. Maybe Mobil 1 is the ticket.
The procedure in the "tame your Getrag" thread helped mine a bunch. It was easy enough to do. Also there is a TSB that came out in July concerning the whine on all SRT and RT's with a manual transmission. If you complain to a dealer they should install the damper kit for free.