Cummins X15 1,000,000 mile motor?

I’ll take that chance versus someone forgetting to tighten a locknut.

 

There's a lot more parts someone could forget to tighten when they swap a cylinder head vs doing a valve set.

 

True. I’m still taking the gamble with the engineering department though.

 

I like to trust they know what they're doing. Seems like the X15 is a step up from the ISX in the reliability department.

Gotta do what makes you feel comfortable though.

 

For 135k I would one with lower miles.

 

The X15 isn't much different than the last series ISX-15 (cm2350). Majority of the difference is in the emission system. The emission system is supposed to be better on the X15 but at 600,000 miles I would have it checked with insite to see the frequency of regens. Running empty a lot is good for the rest of the truck, however it's not good for the emissions system because it needs heat to keep it clean. Insite will show the last 10 regen cycles which is a clue to how healthy the system is, & a regen test can also be performed with insite. I believe you can buy a Cummins Encore Warranty up to 650,000 miles on the motor as long as it passes Cummins inspection, if it can't pass the Encore Inspection RUN.

 

On insite, what do I click on to get to the last 10 regen reports?

 

Advanced ECM Data, then After treatment history. They're listed newest to oldest. You can also see the catalyst efficiency by going to Advanced ECM Data, After treatment Diesel Oxidation Catalysts Efficiency.