You must consult your owner's manual for the correct capacities. This is the *only* reliable way to know for sure. The manual will specify the capacity for each component (front differential, rear differential, and transfer case).
Failing that, you can:
* Find a repair manual specific to your 1995 Jeep Wrangler: These manuals provide detailed specifications. Chilton and Haynes are popular brands.
* Check online forums: Jeep Wrangler forums (like JeepForum.com) are a good resource. Search for your specific year, model, and axle types to find what others have used. However, always double-check with a reputable source like your owner's manual.
Attempting to guess could lead to overfilling or underfilling, both of which can damage your drivetrain. Always refer to the correct specifications before adding any gear oil.