TBammer wrote:
I did some research and learned a lot about gearsets in the differential, and how they harden during the break in period through repeated heating and cooling, which causes metallurgical changes to the castings. The concern is that early on they heat up from the friction as the gears mesh and surfaces harden. If the oil overheats the process is corrupted and can compromise the strength of the parts. The speed shops all recommend changing the rear end oil after the break in. As someone who wants a truck to last, I will be following the experts recommendation. I was just a little taken aback by the information. Learn something new everyday.
So the plan is to take it out last twice a day for 15-20 mile drives of varying speed, without prolonged high speeds. Just means taking a long way around to work and home, which should do the trick until the mileage is hit,
That is a very good plan indeed. You are wise, grasshopper. :)
The whole break-in process and reasons why were explained to me after I had the gears changed in one of my F350's several years ago. Their explanation sounded alot like what you found. I did what they said to a T and the gears have never given me a problem, some 12 years later.
It amazes me that someone would spend $50,000-$80,000 on a new truck and NOT do what the manual says about properly breaking it in. I guess when you're super rich and have money to burn, you don't worry about burning it up!
Some of these guy here have trucks that cost almost as much as my house.
I'm a poor guy. Everything I own is old, but I take really good care of my stuff, so I don't have to spend big money fixing stupid sh1t that I broke because I was a moron...
