Break in difference
Okay so here's a question which comes to mind. Most everyone says incl GM, Ford and Ram to run a new diesel at least 500-1,000 miles to break it in before towing. Now, go to a semi dealer and buy a...
Forum Discussion
ACZL wrote:
Why are rear ends not ready from the get go to haul? If motor and tranny are, rear end should be as well. Just don't understand why the rear has to be "broken in" while the rest not. Should be no different in pick-ups or semis. Both are HD in their own right, but seems from the replies, the back ends aren't wholly robust right away. Can understand taking it easy towing 1st time or so, BUT put a driver in a new semi and his/her foot is right to the floor.
Rear gears need to wear in to match each other. That takes time which you can’t practically do at the factory. The result of not doing it is a noisier (howling) rear end. I doubt a semi operator would know or care about that, however your average pickup truck owner would be back at the dealership complaining.
I see Ben posted similar info as I was writing this.
