Our 1997 K2500 GMC Suburban has a 14-bolt rear differential with G80 locker.
I would like clarification from folks familiar with this differential as to what fluids can be used.
As I understand, this same exact differential has been used in many year models, and is still in use, and some of those year models recommend synthetic fluid, and some year models recommend standard non-synthetic fluid.
I asked our local Chevy dealership recently to do a differential service filling with synthetic fluid, but they would only use standard fluid.
Can someone speak to the reasoning why synthetic fluid might be viewed by a GM dealership as being incorrect or harmful for this 1997 14-bolt G80 differential?
I would like clarification from folks familiar with this differential as to what fluids can be used.
As I understand, this same exact differential has been used in many year models, and is still in use, and some of those year models recommend synthetic fluid, and some year models recommend standard non-synthetic fluid.
I asked our local Chevy dealership recently to do a differential service filling with synthetic fluid, but they would only use standard fluid.
Can someone speak to the reasoning why synthetic fluid might be viewed by a GM dealership as being incorrect or harmful for this 1997 14-bolt G80 differential?