Using this Perrin control arm bushing kit is straightforward. First, make sure your vehicle is parked on a flat and stable surface, and disconnect the battery for safety. Remove the old bushings carefully from the control arms. Apply the provided polyurethane grease to the new bushings and sleeves for a smooth installation. Then, install the new bushings and sleeves into the control arms. Tighten all the bolts to the recommended torque as stated in the instructions. When using the vehicle after installation, drive carefully at first to let the bushings settle in. As for maintenance, regularly check the bushings for any signs of wear, like cracks or looseness. If you notice any issues, replace the bushings promptly. And remember, keep the bushings clean and dry to extend their lifespan.