I often see EGT 1 @ 900 + empty up mountain pass grades. To me that seems excessive, especially since I am not pulling a trailer or hauling a camper.

Perhaps I have a mechanical issue somewhere... Any thoughts?

 

I don't think that's excessive at all. That's right in range with an engine that's working, and pulling four tons up a mountain at highway speeds requires some power.

If it were excessive it's likely it would fall outside the normal range and cause a reduced power mode and/or check engine light. If that continued it would notify you to pull over safely and it would shut the engine down.

Nothing is wrong with your truck.

 

turbo cool down concerns went away with the dinosaurs

Well, maybe not THAT long ago, but the new oils, etc... will NOT coke up your turbo with normal driving...

NOW, if you are pulling a 15k rv up a 10% grade for 5 miles at full throttle and turn off the engine, maybe you will create some issues...
but 99.999% of the time you have the exit ramp, the idling to park, etc... and you will be good !

 

well noted..., thanks Tom.