Reading a lot about pulling a heavy load on a new 2006 to "break it in".
How necessary is this?
Thanks

 

I'm no expert, but I am pretty sure that towing helps settle the rings and loosen up the motor more than driving normal. As far as how neccessary it is? I really don't know, but if you can tow, do it, it can't do anything but good. If you don't have anything to tow, drive it hard. I'm sure I won't be the only one to tell you to open it up and let it run. Diesels need to be run, not babied. It seems to me that alot of people agree that the harder you break it in, the better fuel mileage you will have later in life.

 

I asked this question myself when i bought my 05. there seems to be quite a few opinions on this topic. must of the break-in issues are referring to the pistion rings, bearing, ect. in the engine, tranny, and gears in the axles. i waited a few hundred miles before towing.

i forgot the member's name but he told me, "once the rest of the truck is broken in, hook the biggest trailer u can find to the truck and drive it like u stole it." The engine will break in and run better if you drive it hard.

so i did and all's well so far

 

yup,,your baby likes to get spanked once in awhile..I know it"s hard to do, but she will love u for it

 

Ed Paul,
U R A Perv. But that's ok.
I guess I'll spank her real good, or bad depending on your view.
Have a good one.

 

I have a 2004 305 555 with about 30k miles on it.
I tow a 2000 lb pop up trailer with it (real heavy eh!) once in a while.
I also carry about 800 lbs in the back for winter.
So really does not work hard.
The truck runs great and burns no oil.

 

We take our boat and camper (7k) to the lake several times a year. My truck seems to run better after a good after a good pull. Might be my imagination.

 

bad is good,,just don"t do any hole shots,,it's bad on the tranny,,,that being said,,i am now going to listen to the angel on my other shoulder,,lol

 

The little book in the glove box is called the owners manual it will give you the right information if you read it!

My 05 required 500 miles of no towing then 500 miles of towing below 55 mph. Though mainly for the rear gears to set and harden through a heat cycle or two.

The rings in these things will not get fully seated until well above 20k at which point you will notice an increase in fuel milage. Until then tie something big to it and find a hill!!

Rick