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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
And 160°F is really really "cold" in my opinion. I would be concerned that on average usage the oil doesn't get to its desired operating temperature.
Yup I have the same concern. 160°F in terms of coolant is not a healthy enough temperature for most cars, as that's like 30-50°F below what is usally recommended.