[jhein]

Originally Posted by Jay S

Unless the engine has trouble maintaining oil pressure toward the end of the oil change, or the UOA was indicating that a thicker oil would help on wear, there would be no reason to change to the thicker oil. Heat is the top cause for extra shear, harder driving equals more heat. More heat cycles from longer oil change intervals would be another area that cause extra shear. Some oils shear more than others. It isn’t a problem until the UAO comes back and says it was showing extra wear from your UOA trends.

Makes sense. Thanks!