Catastrophic mx13 failure at 2600km

Don't mean to troll paccar folks by posting this, just wanted to share it, cause a blown brand new engine is relatively rare.

Was hauling fuel and picked up brand new truck at body manufacturer, drove it 2000km home and quit my job a week later. Went back towing and yesterday one of the guys towed in the very same truck with a rod through the pan.

One of the drivers pulled over reporting a knock, boss went out and revved it 3 times and BANG it shat the bed. Never even made it's first delivery

T880 18sp estimated gw 34000kg at time of failure. Don't know what hp/tq it was set at, but I thought it was underpowered when I drove it, but ran good. Did have coolant smell, wondering if it hydrolocked. I tried uploading a pic of new drain location in pan but I can't figure out how.

 

When I drove it the brake lights were programmed on with the Jakes and I missed a few up splits trying to keep the lights from blipping. Got overspeed warning on dash when it revved on the pedal. Hope I didn't void their warranty or I won't be popular. I can't see it having overspeed counts on ecm unless you overspeed it down a hill. I guess I'm just paranoid as I don't work there now and I'm not going back anyway. It ran fine when I drove it last

 

Yeah I never held it in too low of a gear down a grade so I'm prob fine. If they claim it was oversped when they plug in, and revving it puts it into overspeed there will be three counts at time of failure anyway and I no longer worked there

 

Fair enough I guess it is laziness leaving the switch on. The other truck I drove had the smaller isx and I never noticed Jakes burping when I shifted. A lot of times I was doing deliveries on a lot of winding hilly back roads and would have been flipping Jake switch 100

times a day.

 

I'm going to be called stupid but the 1.5 years I drove for them the Jakes were on 99% of the time. Unless it was glare ice they were on. Even packed or loose snow they were on. I found it far more likely to lock up (potential toboggan) under service brake. when steers began to loose traction turning, letting off throttle and on Jakes put weight on them and they hooked up.