How often do you guys check your t-case fluid? ive never checked mine, and its going on 6 years old and my truck has been beaten ive done alot of muddin and gone threw alot of water so i no it has to need some kind of maitmens. I no theres just a little plug on the side of it, but whats is the best brand and how full should it be? I herd Royal purple makes some of the best stuff for hard workin engines.

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i have a 2005 fx4 stock