Transmission - Approaching 50k Miles

[Josh185]

My truck is approaching 50k Miles. I plan on changing all driveline fluids but I am unsure of what best to do to my transmission. Should I just change the oil and filter or do a flush or just leave it alone?

 

I made a poll to see what you all suggest I do(first attempt, not sure I did it right). Please feel free to leave comments along with your vote or any other suggestions you may have.

 

Thanks,

 

-Josh

[AzDragonLord]

I drop pan and change filter about every 30k miles.

[Josh185]

So, based on the votes so far, it looks like just an oil and filter change is favored. Thanks all that have voted so far.

[ChevyTech77]

I've said it before, and I'll say it again........

 

You don't change 2/3 of your engine oil, do you?

 

Flush it, change the filter and forget it.

[8.1HD/ALLISON]

+1 If you are going to do it right, do them both like stated above. Flush, Then change filter and top off. Takes a couple extra quarts, but that is some serious peace of mind to me.