FishOnOne wrote:
mowin wrote:
Not sure if all the 6.4 owners know this. The 6.4 takes 0w-40. Currently there is only one oil besides the mopar brand that meets Rams specs of MS 12633, and thats Penzoil Ultra. There are other 0w-40's out there but they dont meet Rams standards.
So you can't use API SN rated oil?
If the label doesnt have the MS 12633 rating it is not approved.
The mopar oil is rebranded Penzoil ultra. I e mailed Amsoil, Mobile 1, and Rotella and asked if there 0w-40 meets the rating. They didn't. IIRC one of them didn't offer a 0w-40.
