Real world... X15, MX13, d13, or DD15???

I’m driving a 2019 International LT with an X-15, and at 430k it has been good to me since new. Runs strong, no leaks, no oil burning.

I hope I haven’t jinxed myself!

 

Ask locals in your area which shops are good… buy a brand that the good shops sell . Pretty much DD15 x15 then mx13 is my preference but being regional a shop that can repair your truck is more important.. currently driving a DD15 that appears stock but diesel spec tune. Zero engine issues in 2 years other than a 2 month period that motive eld was messing everything up . Once motive fixed their glitch truck is great again.

 

There’s no 15 liter Paccar. It would be the MX13.

 

I thought there was a mx15 also.

DD15 515 horse for the win.

Cummins can't seem to keep the front cover from leaking after 15 years.

Mx13 is weak and not the greatest for economy. I can't say about problems yet. I think I've got 50k miles in the one I'm driving.

Whatever you buy. Make sure there's no logging device plugged. They wreak havoc with the electricals and computers.

The one I'm driving just recently got resolved pulling the peoplenet box out. And new batteries. Although the engine light is still on. And regen not operating in the manner it's supposed to.

 

No. Only 13 liters. 510/1850 is as big as they get here. There are rumors of a 15 liter overseas and in Australia. With the latest GHG regs I don’t see then making it to this side of the pond.