Originally Posted By: Or
OK, some things that point me in the right direction. Let me re-state the very same question in a different way:
What are the pros and cons to running 5w-30 vs. 10w-30 full synthetic in a vehicle if temps are always between 25F and 85F?
Between 25F and 75F, there are no disadvantages to a 10W30 synthetic.
Advantages would be small in size, but still there, better volatility and shear resistance (temporary and permanent).
5W30 may offer a minuscule fuel economy increase
OK, some things that point me in the right direction. Let me re-state the very same question in a different way:
What are the pros and cons to running 5w-30 vs. 10w-30 full synthetic in a vehicle if temps are always between 25F and 85F?
Between 25F and 75F, there are no disadvantages to a 10W30 synthetic.
Advantages would be small in size, but still there, better volatility and shear resistance (temporary and permanent).
5W30 may offer a minuscule fuel economy increase