Freightliner 2017 DD15 Engine overhaul

Good morning everyone
I have a question in regards to my 2017 Freightliner, it hit 700k miles a few days ago and i want to prevent a major break down in the future, i understand the outcome is inevitable at some point an engine reman is unavoidable but at this point i can use some advice on maybe doing an inframe overhaul or replacing some parts to make this engine last longer before a major overhaul. Could you also please advise on the best place nationwide to do engine repairs in terms of affordability, experience and value for money?
Thanks in advance.

 

Area doesn't matter to me, i run to all 48 states and i don't go home often, i can get it done anywhere. I'm leasing to a company that's based in Chicago, IL

 

Thanks, any advice how to get a list of some of these centers please?

 

I Googled it and i guess i got it
Interstate > Products & Services > PowerSystems > On-Highway Engines

 

Would be nice if anyone can share their view based on experience in having some services done somewhere