The steering linkage should be greased at the same interval as the ball joints. Grease nipples are installed on the steering tie rod ends on most models. Wipe all dirt and crud from around the nipples at each tie rod end. Using a hand operated, low-pressure grease gun loaded with suitable chassis grease, lubricate the linkage until the old grease begins to squeeze out around the tie rod ends. Wipe off the nipples and any excess grease. Also lubricate the nipples on the steering idler arms.