Originally Posted by Dragon44
Thanks for the replies. Wouldn't Mobil 1 meet the Rams specs just the same as Pennzoil platinum?
Mobil 1 used to be "the oil" for the SRT's before the Fiat takeover, which resulted in the termination of the factory and service fill contract Chrysler had with Mobil, and resulted in some serious sour grapes, like no Mobil 1 products wearing any of the Chrysler approvals for example. Prior to that, the oil used was the Euro 0w-40 Mobil 1 product. The "special" SRT Pennzoil product has higher volatility and lower AW levels than a Euro lube, read into that what you may. I've personally shied away from using it, instead using Castrol 0w-40 and now Ravenol 0w-40 in my 6.4L.