5W40 or 15W40 in 6.7 CTD?
So the owner's manual in my 2015 Ram says to use 15W40 oil in the 6.7 Cummins diesel, unless the temp is going to routinely be below 0*, in which case you should use 5W40. Here on Long Island, the ...
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otrfun wrote:
Sounds like a perfectly legtimate explanation to me. If this is the case, gotta wonder what specific issue in that 6 mo. to 12 mo. MTBF/OCI data pushed their warranty costs high enough to warrant a 6 mo. OCI? Hhhmmm . . .
$$$$ is part of the explanation. They are hoping you bring your shiny new Ram back to the dealer for that 6 month service. They are going to charge you $150+ for an oil change that costs less than $85 for oil and filter. Oh, and there's always the up-sell of other services that a lot of people buy once they're in the door.
KJ
