05-21-2022, 08:09 AM
Have not previously used Rotella in the past. Being located in a very hot climate, the OEM-recommended 10W-30 did not sit well with me. I was happier when I saw the service manual ok'd 10W-40 (at least there was a higher end viscosity commensurate with hotter temps, e.g., >100F ambient). That being said, once mine is a little more broken-in, I will entertain possibly using 15W-50 int he summer months. Oh, for clarity, with the exception of OEM break-in I use full synthetics in my motors across the board. Years ago, I recall seeing SAE data charts showing slightly lower engine temps with full synthetics versus standard mineral oils and that has always left an impression on me. Combined with judicious oil and filter changes, I have never had an internal engine component failure in any of my vehicles.