I'm getting my engine back into the truck after a rebuild next week and I'm wondering what the best way to break it in is. I've heard both drive easy for awhile and load it up and go. I know on the bigger trucks after an overhaul they just go right back to work so, does that apply to the 5.9? Thanks.

 

You'll get different replies and opinions-- so without saying anyone is right or wrong...

About the first 50-75 miles take it easy to allow a general seating of things then load it up and work it hard to set the rings and you're good to go. This has worked for me.