2016 2500 6.7

[Coastie89]

Can any answer if Royal Purple 75w 90 gear oil meet the same standards as the Mopar 75w85? I can’t seem to find anything in royal purple saying GL5 or other requirements for the oil. Thanks in advance

 

[mtnrider]

That's the problem with a lot of these "gucci" oils as I like to call them. They claim they will work but they never get them certified to those specifications to actually put it on the label.

I just used Mobil 1 75w90 in my 16, meets the specs and works well.


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[Coastie89]

Thank you