I noticed something interesting with the 2025 Durango running the 5.7L HEMI V8 — it’s now spec’d to use 0W-20 oil, while the same 5.7L HEMI in Ram 1500 trucks has traditionally run 5W-20. That raises a fair question: why the switch to a lighter viscosity oil? Is it purely for fuel economy and emissions compliance, or is there something different in the calibration, duty cycle, or operating expectations of the Durango versus the pickup trucks? Thinner oils can reduce internal friction and help ef