2005 Dodge Ram DIFFERENTIAL TEMP

Hello frajagamo

For optimum protection in today's differentials operating in severe service environments high quality synthetic gear lubes are recommended. In some cases synthetic gears lubes are capable of extended drain intervals of up to 50,000 miles in severe service and 100,000 miles in normal service.
What oil you use will make a big different between 112-117degrees
But all dodges full size pickups and ram, front and rear differential have draining interval of 15000 miles for regular differential oil, so using high synthetic, your ram differential will be protected
AMSOIL synthetic gear lubes, for example, are formulated with shear stable synthetic base stocks and an extra treatment of additives.
The temperature can range between 250 and 350 without causing damage to your differential and this included hauling 14000 pounds from orange county California to Nevada state line. (This was according to the 2005 SAE)