Community Alumni
Jul 17, 2015Mac,
In my opinion you are on borrowed time. My '99s transmission failed at 47000 miles even after I changed some valving, switched the external cooler to the 6.0 cooler, added a larger oil pan and ran synthetic oil. The planetary gears are a weak point which failed on me while on a trip. And it never heated up even while towing over one of our Colorado mountain passes but failed 40 miles from the pass on level ground.
I put a Jasper heavy duty rebuid in it and a month later traded the truck off as this was the second breakdown that year.
looks like you are doing good research so I hope you have better luck then I did.
