830k miles ISX cm2350 on borrowed time?

Heh, I got a 2020 Western Star with around 260k miles I'd sell you. Im looking to retire and was going to talk to a couple of local dealers on it next week. Perfect timing if you are serious.

 

Well, not sure what you expect, motors don't last forever, and this one doesn't owe you anything, so yes, on borrowed time. I drove a FL Columbia with a 500 Detroit had that kind of mileage, still ran good. I suppose the coolant loss would be my concern. Grey or white indicates it's mixing with oil somewhere. My advice, with all the uncertainty today, keep the old gal, especially if it's paid for. Remember, a different truck, while new to you, was somebody elses headache.

 

Contact Cummins corporate to get information and price on an engine swing. My 871 was 53k in 2022. Took 3 days and down the road. No issues same warranty as a new engine 2yrs 200k mi

 

Had a cm871 rebuilt in 2020 for 23k. No telling price now.

 

Have heard over the years that powered Cascade is the best thing to use. 1 gallon of oil in 17k miles is nothing. Never have could understand why some get so bent out shape, when an engine ‘uses’ a bit of oil.

 

Really, 1 gal for 17K almost sounds like something wrong the other way. Heck, I remember that old KWhopper with the SC350, we added 2 gallons of oil at every fuel stop! Matter of fact, I drove plenty of trucks with old Detroits where the boss said, "and take some oil with you",,

 

Pull an oil sample on the next charge but if your not using a gallon a DAY I would keep rolling with it, it is borrowed time at the miles but it doesn’t sound like it owes you anything, could always drop the pan/dyno but I’d probably just keep saving. Though it sounds like the egr cooler could be starting to act up

I’m a fan of sticking with what you know vs something you don’t unless it’s brand new, see how the year pans out and if you are looking to keep Uncle Sam out of your pocket come October/novermber make a decision then

 

I have seen a bunch of these getting up to 1.3 mil, but you gotta do main bearings around 800k and camshafts usually fail before 1 mil.too.

 

Is this truck demandated ? If it still has an active egr cooler these can leak and cause sludge. They are known to spring leaks after draining and refilling coolant if not refilled back under vacuum. The excess air in the system that gets trapped can cause the cooler to leak. Maybe could be a good place to start. That a.ount of coolant usage is about what a egr cooler leak would use. Can pop the clamp off the back side of the cooler and check if it's wet with sludge. Will also be in your crossover tube as well