<b>Tranny/Transfer Case:</b> Look for leaks and check the oil level. If you live anywhere near a wet state, expect the tranny and transfer case to be contaminated with water. Drain and refill with the correct oil. After refilling our Dana 300, we found a major leak coming from the front output. The seal was shot, and the yoke had a deep grove cut into it. We replaced the seal and popped in a good used yoke. During the test-drive, listen for any grinding or unusual transmission noises. Our T-170 sounded tired, but some noise is to be expected of an older Jeep. Many noisy manual trannies will go for years before completely failing, and they may never fail at all. Also check the tranny mount—here’s a photo of ours doing the splits.