Lubricating U-joints/drive shaft

DSDP Don wrote:

There is a secret to lubing the driveshaft. Most of the u-joints have two grease fittings, one on each side. Either one will fill the u-joint. Just make sure you see grease coming out of each cap. The slip joint has one fitting in the center of the tube. They hold a lot of grease. As you fill the slip joint, grease will eventually run out of a small hole at the back of the yoke, between the yoke and the u-joint. When grease starts coming out of the hole, you need to get a finger in there and plug the hole. It's difficult to do while still pumping the grease gun. It's much easier with an air gun. Once you block the hole, keep pumping until grease comes out where the slip joint moves in and out on the splined shaft.

Take the time to read the above quote on the greasing process for the U-joint(s) and slip joint. One needs to follow that process to insure proper and complete lubrication. I grease all fittings at oil change (7500 miles) but I grease the U-Joint and slip joint again in between oil changes.