Advice on breaking in a brand new Paccar MX engine on flat lands please

Drive it like you stole it. The new engines are so tight onthe specs you can't really hurt them. Go with the no idle discipline and you're good to go.

 

It's likely so preprogrammed that you won't be able to do Anything other than drive. Do you know what it's governed at? The best advice is to keep the idle to a minimum. Lugging the hills would be good as well. How heavy are you pulling? If you get some of those gentle breezes from the west that you get out there that will help too if you're running against them. As my mechanic told me, it's not like the old days with the mechanical engines where break in was a much more important process

PS. Drive it like you stole it... All out! Shalom

 

you do not want do anything like this.....

all of you US members drive euro engines on wrong way and have wrong opinion on them

they are build for lugging

mx engine feels best from 1000-1400rpm maybe max 1500

going uphill downshift half gear before hill ( if it is larger one) lug it all down to 1000rpm and downshift it 1-1.5gear at once try to shift it as less as possible

...smaller hills dont shift it at all

 

I'll do that,

on my next load to europe !!!

 

no seriously those engines are made for this it already have most of its power on low rpm and you wont to get anything if you rev it high

maybe it is not bad to be little more gentle to new engine and use lot of half shifts but once it is not fresh anymore

 

Given his driving environment and the way these trucks are geared and programmed, he'll be doing what you are suggesting. You missed the part about driving on the flatlands. No hills to speak of. The best he can hope for is a strong head or sidewind that is common there. He'll do fine. I agree with you about lugging and suggested that but you can only do what you can do given the cards you're dealt.

 

A few pointers...

The ecm is programmed to keep peak engine power 20% less until the unit has achieved 30,000km's. So I've been told by Paccar.

Make sure when you start the truck that you let the key sit in the on position for 30 seconds for the truck to do it's pre run prior to starting the truck. If you fail to do so your truck will throw codes. Again Paccars request.