ISX or the MX 13?

I have 2015 isx with 300k no issue so far, it has lot power and gets good fuel mileage.

 

Cm2350, had the updated pump, from the earlier cm2250 with the ceramic plungers (which can cause major issues if not updated with new pump) other major change with the later model cm2250/2350, is single cam, vs earlier ISX twin cam, later model doesn't have injector cam as they went common rail.

 

I wouldn't say it's super expensive. It's fairly expensive up front, but it's a one time fee. Compare that to Cummins Insite which needs to be renewed yearly and Insite will be more expensive after a couple years.

MX engine is made by DAF. It's not made by Cummins. Not sure where that information is coming from.

Certain components of the aftertreatment systems are made by CES - Cummins Emissions Solutions. Nox sensors, for examples.

Paccar does not make the PX engines. Cummins makes them and Paccar brands them. This is why the PX engines are still warranted through Cummins and not through Paccar.

@SoCal Trucker,

I don't know the VIN, but it's highly unlikely you can extend the warranty unless it's still within the base warranty. You may be able to purchase extended warranty, which I highly recommend for ALL trucks. One decent failure will pay for itself. If anyone reading this is debating on paying an extra $5,000 for extended warranty - don't be cheap. Buy it. You won't regret it.

There's no hard numbers - Paccar division might have something but that's unlikely. I do probably more warranty on Cummins engine than Paccar engine due to Cummins being more popular, but if I were to remove that from the equation I would say that it's a 50/50 split.

I can't call either one more reliable than the other. I've seen brand new Cummins engines fail and I've seen brand new MX engines fail. I've seen MX engines never once go down and I've seen Cummins engines never once go down. I've also seen Cummins engines down monthly, and I've seen MX engines down monthly.


Buy the engine that has the specs you want, the price you like and the service options that you can work with. For a lot of drivers - the MX hits 2/3 but there's not enough MX techs on the road for them. It's something that's still being worked on.

The MX is still a "new" engine. There's been several iterations - yes, but compared to Cummins, CAT or any of the others, it's a baby. Mid to large dealership groups will have multiple techs able to troubleshoot the engine but once you get further from them and start hitting the smaller dealerships you might find that they only have one tech that can work on it.

That's a problem I hear less of every day though. Paccar made a huge push to have ALL engine techs trained on the MX. It didn't matter if they were "MX techs" or not. If they worked on an engine they needed trained. It's made a difference and drivers should start seeing improvement as those newer MX techs gain experience.

 

Paccar does not make the PX engines. Cummins makes them and Paccar brands them. This is why the PX engines are still warranted through Cummins and not through Paccar.



Didn't say Paccar "made" the PX engines, I said they "market" them.

 

Valid point. I misread your statement. My apologies.

 

What's the VIN? Feel free to PM me that if you'd like. I'll take a look at the repairs.

 

Every time I try to get to the top of the hill, some jacka$$ always pulls into the left lane doin 26mph passing a 25mph truck!! Never fails, doesn't matter how fast they see you coming, they turn left in front of you.