okay so I have a t-case leak, its leaking from the output shaft into the front differential, so would that be the same thing as a pinion seal on a differential? Is it easy to fix? It's only a small leak and I opened up the t-case fill hole and a little bit oozed out so it's still full, but it looked like really muddy puddle water, is that okay? How often should that fluid be changed because I swear I phoned the dealer and they said it never has to be changed.... sounds like an accident waiting to happen... thanks for help guys. Also, this is for my T.J not my cherokee, but its a 231 t-case all the same, just hidden behind a skid plate.

 

OK is it leaking from the front yoke or the rear output shaft on the back of the t case I may not be fully understanding. But if its out the back of frond differential yes pinion seal is fluid red or oil

 

And yes chacge ur rear out put seal. Drain all the fluid and flush it a couple times with brake parts cleaner refill and enjoy