Fluid Service interval for Transfer case?

[c good]

Replaced transfer case fluid (Auto Trac II) on 09/22/09 when my Envoy was purchased from a friend with 151,000 miles. It now has 193,000 miles. So that's about 13 years and 42,000 miles on the fluid. Is it time to service it again? 4x4 gets used about 6 times a year. 15-20 miles each time. I'm thinking just time wise it should be serviced regardless of the amount of use? Thanks for any input.

 

[Mooseman]

TC service is 50k miles/80k km, no time specified. Changing it early won't hurt but changing it late could.

 

[Mooseman]

And the amount you use it has no bearing as it still keeps moving and pump fluid internally.

 

[c good]

Thanks Mooseman....I'm thinking I'll just change it out. Even though it hasn't reached 50 k miles I'm thinking time wise it might be better. It's only about $20.00 for two quarts. Why not....