56K on my 09 Hemi. Just received the letter as well but knew about this for almost 6-7 months now from the forum.
I am REALLY Hesitant to even let Dodge touch my truck! Up till now, I've done complete oil replacements in all orifices
I've chnaged the Rear Diff fluid and Cover to a Mag-Hytech! and ALLL oil is AMSOIl except motor oil (Mobil 1 full synth 5-20)
NOw i have to let these guys at my REAR!
Question: Do they have to drain or touch my rear diff cover or oil? Or are they just going to go in from the driveshaft?