[Richard and Rhonda]

Alan,

Most vehicles with manually shiftable transfer cases can be towed four down. When a vehicle has a transfer case that you can shift into a neutral position, you can effectively disconnect the driveshafts from the transmission by putting the transfer case in neutral. The driveshafts spin while you tow, but the transmission does not turn. You see a lot of Jeep toads for this reason.

Some vehicles are equipped with transmissions that will tolerate towing four down with the transmission in neutral, such as Honda and Saturn.

Most auto transmissions will not tolerate being towed in neutral, and there are two solutions. One, install a aux pump to circulate the transmission fluid while towing. Or two, install a device which manually disconnects the driveshaft from the transmission.