Nv5600 Oil

I'm Bringin Back My Thread, I Got Another Question For Ya. Nv5600 Calls For 9.5 Quarts, Is This Right?? I'm Asking Cause I Just Got Fast Coolers And Need To Know How Much Oil I Need To Have When I Get Ready To Put Them On. Also Figured I Would Drain Trans Completely And Start Over With New Oil, Good Idea???????
 
I change mine every 50k, so it's hard to remember -- I thought it was more like 3qts or so + whatever the fast coolers require.
 
Really! Diesel Truck Resource Said 9.5 Quarts, Where Should I Look To Find Out For Sure? Do You Have Coolers On Your Trans?
 
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