The manufacturer doesn't install lubrication fittings in lube points on the steering linkage or suspension. You can buy metric threaded fittings to grease these points or use a pointed, rubber tip end on your grease gun. Lubricate all joints equipped with a plug, every 15,000 miles (24,155 km) or once a year with NLGI No. 2 (lithium base) grease. Replace the plugs after lubrication.
Do not over pack the steering components. The rubber boots will burst. This will allow dirt and contamination to enter the component. If this occurs, the component should be replaced or the component will have to greased frequently.