I have a 2015 3500 DRW, CTD, 410 rear with the Aisin trans. Is anyone using this gear oil in there rear? The manual states LS is not needed.
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UPDATE!!!
The gear oil I posted about I was getting a feeling of slight chattering from the rear when turning at slow speeds. I replaced the gear oil again but with Mobil 1 75w90 with LS additive and it solved the chattering feeling. So I would say the manual is wrong.