T680 stamped weights

Doesn't mean the Paccar is better or worse then the ISX.
There is a a thread by @Belials about warranty.
Worth reading.
Basicly Paccar gives better/longer warranty on their own productline vs Cummin.

 

I have allways said that the MX will not be king off the hill.
Was not designed to be,is more about mpg.

 

Thankfully it is not my truck. It was my company truck. Same guy I'm leased to. My truck is just an old jalopy. No way I could have bought that truck for my first truck like $80k then had that happen. Looks like cummins is going to cover about 50% of it. Complete crate motor.

 

This is absolutely true. Aside from some cases, most engines are just as good as the rest. What you should be more concerned about is service. Can the engine manufacturer provide me the level of service that I require, and how will they treat me? Does it have the specifications I want? Etc.

Some people get lucky, and some people are very unlucky - with Paccars and with Cummins. I've seen both sides of it. Owners of engines who have the truck in the shop monthly with major repairs, but have other units that have never had a failure. It's just a roll of the dice. And you're absolutely correct - each year, they improve. This is especially true with the Paccar MX. The MX13-10s didn't do so well, almost everyone can agree to that. But the MX13-13 is a different story. By then, engineering figured out most of the kinks and resolved them. Manufacturing issues, training issues, etc.

@daf105paccar is correct about that. I'll say it over and over - GENERALLY SPEAKING, Paccar will provide more "good will" than Cummins. Goodwill is what they consider providing financial assistance for a repair outside of warranty. Your base warranty for both engines is 24 months / 250,000 miles. Outside of that, if you have a failure - your own course of action is to pay for it and see if the manufacturer will assist.

Generally, Paccar is more forgiving. BOTH of them want to see that you have properly maintained the engine, and they both like to see that you took steps to protect yourself (aka: buying extended coverage). However, Paccar makes its decisions on a case by case basis by rep, with the dealer involved. Cummins makes the decisions in a similar manner - but they have hard limits. 4 year old engine? No extended warranty? Instant rejection, no goodwill assistance.

With Paccar, your local dealership will work with their rep to get you assistance. With Cummins, your local dealership doesn't have nearly as much involvement.

Obviously that can't be all you can consider though. Cummins still has far more service facilities on the road, and if they have the specs you need, Cummins is who you should go for.

 

A remanned Cat will give you 4year/ unlimited miles from what I read.

 

24 - 36 months, with mile limitations varying.