about how many miles would it take for an underfilled t-case to start screaming?

 

depends on how under-filled it is.

 

say slightly

 

Only time will tell. Why don't you top it off / replace the fluid ? Diaqueen is like 45$, and it will last you a long time. Better than waiting for a t case to break ?

 

To me, very slightly is the same as full.

 

How do i check if its topped off put it on the lift and open the fill plug if it pours then its good?? I just changed the fluids 200 miles ago and its working fine for some reason i feel like i need to go back and check

 

i opened the plug and it spit out onto my pants and shirt. good to go