What is too many miles?

[Heart of Dixie]

I have looked at several used trucks with Cummins, sleeved engines. The truck I have narrowed the search down to seems to have been very well taken care of, but has 525 K miles on it. The owner has agreed to have an oil analysis done on the engine, transmission and the rear end. I have spoken with Cummins and they said to expect (with proper maint) 750 - 800K miles before an in-frame major.

My question is: If the oil checks out, do you think this is too many miles and therefore too much of a risk? The truck is a T-300 KW.

Thanks for the input.

 

[davekc]

Those miles are about right assuming proper maintenance. It may require some repair but not any of the hard parts. Heading to 800,000 plus and I would say you are pushing your luck. Most OEM charts show rebuild or replacement recommended in the 750,000 range for the smaller engines. Class 8 or big block engines should go to a million or more before your at the same criteria.
That is taking into account proper maintenance ect.






Davekc
owner
21 years
PantherII
EO moderator