‘20 Cascadia, 260k miles…what to expect in the next few years

Mines a 16, Been down a ton of sand/dirt roads in fields, pulled heavy loads up to 117k gross.
Hadn’t started it since March, Turned key and it fired right up after checking oil and antifreeze.
Depends on how you service them, When it was parked it was ready to go. I change oil every 12k miles, though lately this one’s been a spare truck.

 

I have a 2021 just the regular maintenance intervals. I had a Def sensor act up(warranty covered). I haven't had any issues. Thank God. I just stay up on the maintenance schedule.

 

Soft ware updates are a must.....you will need 12 -16k for one box replacement and 5-7k for EGR cooler. Both above expenses can be cut in more than half if you can do a lot of this your self. And hoses for some reason...
keep a eye on your anti freeze. Seems like all unprevented maintenance includes antifeeze to one degree or another. I have a 2016. From 680k to 701k miles I couldnt stay out of the shop. Back up and running solid now.

 

Nice keep it up

 

My friend owns couple of 2019s. Bought at 400k miles. At 500k miles all sorts of DEF problems start showing up, at 600k one truck had front leaf spring cracked (none available in the USA right now), fuel pump and fuel lines needed to be replaced. Another one had clutch fail (dt12 transmission) almost $10k repair, then something else.
Basically it seems like after 500k miles they start needing lots of repairs

 

They do. Right as the warranty runs out the repairs come in

 

Woah, it really costs 5-7k for an egr cooler on a Detroit? Cummins isx15 is quite a bit cheaper than that iirc.