700r4 transmission fluid add?

[Groz's Burb]

A bit of a rookie question here but I'm currently driving my rig on a 5,000 mile trip; I could use some advice. My transmission fluid is low and I want to confirm the fluid-add location. I already found the type of fluid to use. I've found some pretty detailed transmission rebuild threads which is a big help for when I get home but right now I just need the quick fix. Additional suggestions are welcome.
I have a 90 Burban with the 350TBI and 700r4; do I add fluid where the dip stick goes?

Thanks in advance,
Mark

 

[swettysblazer]

Yep. Make sure to check it when hot and in park with the engine running.

 

[Wes Harden]

On lvl ground. The add line means 1 pint to top off.
Dextron III

 

[Groz's Burb]

Thanks all. It was low when I checked it earlier (in park, running, level ground) so I'll shoot to top it off for now when I can! I had checked it before my trip and it was fine so I'm not exactly sure what ate up the fluid. I climbed some steep hills for long distances so I'm thinking that was it, frequent shifts between 3rd and 4th

 

[JT88K5]

You might want to check the fluid level in the transfer case. If you have excess, that’s where your tranny fluid went. If that’s the case, a front input seal on the t-case is in order.

 

[Groz's Burb]

You might want to check the fluid level in the transfer case. If you have excess, that’s where your tranny fluid went. If that’s the case, a front input seal on the t-case is in order.

How does one check the fluid level of the transfer case? Any other additional indicators I can look for, I think I may be losing trans fluid. Thanks in advance

 

[Wes Harden]

there will be a pipe plug in back 2 actually 1 fill and 1 drain remove fill(upper one) if oil pours out it over full. Most common cause would be trans fluid getting past the seal between trans and t case.
If so you may not need to replace seal. There are vents on the trans and the t case for air to escape when the units get hot, if the trans vent is clogged up that pressure forces trans oil into the t case. Clean the vents. Your axles have vent too, check and clean them out as well.
If the the oil continues to leak into t case the seal or shaft surface has been damage