Navistar Maxforce7 Diesel

john&bet wrote:

Idle-Up wrote:

Turtle n Peeps wrote:
Stay away. They are slightly better than the pickup truck version but they still tend to bend push rods and connecting rods. Good luck if you buy this rig with this engine.

You should really research before you make blank statements about something you know little of!

There is hundreds of thousand of these engines in service today in medium duty trucks plus they power 70% of the school buses throughout the US. I have owned three of these engines in RV's and they are as dependable as a Cummins engine and provide plenty of power. In addition they are cleaner burning engines and require no addition of DEF fluid like other diesels. I presently own a Nexus with the same engine.

In addition this is almost the same engine that powered hundreds of thousands of Ford Pickup's. The law suit was regarding their 11 L engines about emissions and has nothing to do with their dependability.

My school district has several of the Navistar school buses with the DTE 466's if that is what you are refering to. The one manufacture in '13 and up are giving the maintenance dept. a lot of head aches. In '13 I started with a new bus and the egr cooler started to drink coolant. As much as a gallon every 3 days. It was finaly changed after a years and a half. This school year it has been a royal pain, throwing codes all the time. 2 years ago Navistar switched to the Cummins 6.7L in that same buses. My district buys a new one every year and 99% of them lately have been Cummins equipped.

Yep.

The problem was they decided to go with no DEF and instead go with full EGR. That was a dumb idea and it almost killed Corn Binder. When you put that much soot back into the intake you're going to have all sorts of problems. And these are the problems people are seeing with these engines. Even Cummins/Ram saw the error of their ways and finally went with DEF and SCR like everybody else in the modern diesel world. :)