Using this drive shaft boot is easy. Just make sure to install it properly on the CV joint of your Subaru. When installing, check for any damages or irregularities on the joint itself. As for maintenance, it's a good idea to inspect the boot regularly, say every few months or before long trips. Look for signs of wear and tear like cracks or holes. If you notice any issues, replace the boot right away. Also, keep the boot clean to extend its lifespan. Avoid driving through extremely dirty or wet conditions whenever possible to prevent excessive damage.