Maybe a tranny specialist can help me. My wife just bought a 98 12v 2wd with a 5 speed. At first we had no problems for the first 2 weeks, then after a 1400 mile trip from Texas to north Carolina her transmission got stuck in 5th gear. I popped it back in neutral and we were on our way. I ended up draining the gear oil and replacing it with the oem oil from dodge and didn't have the problem again for about a week. Then the transmission got stuck in 5th and wouldn't pop out, so I removed the tail housing. I ended up replacing the 5th gear synchronizer and putting it back together. First drive after that it hung in 5th again. Could anyone help me figure this thing out. It has no problems with any other gear and the truck only has 134k miles. Out of every diesel I've owned I've never had this much trouble. Any help would be appreciated