No, the rest of the truck is not. The other parts are run-in at their own factories. In the case of our AdvanTEK DANA 60s, they are built and run-in near me at Dry Ridge, Kentucky! Surely you are smart enough to figure out! DANA doesnt just send a box of machined parts in a crate to Stellantis and say, "Here ya go, slap that in your fancy new TRXs". They do it in-house first. And its sufficient. Here, proof from your own link in the other thread that you do not need to drive 20 miles, park 30 minutes, drive 20 miles, park 30 minues.--
The last line in that link you gave says the following - AND I QUOTE --
AS . AN . ALTERNATIVE!
. . . I guess some of these axle gear manufactures need to let some forum members know, for example, that they " aRen'T fOlLoWiNg tHe pRoPer BrEaK-In" themselves either then.
Again, like the building a HEMI in your garage example from the other thread. If you are putting in non-mated parts, of course you are heat cycling them while breaking them in. Un-mated parts? Of course!! Just like your own link proves!