Rhino Special Lubricant grease is required every 10 hours of impact time. It is important to maintain the proper level of grease to prevent excessive wear of the internal seals and wear parts of the driver. It is important to only use Rhino grease or exact equivalent in these drivers to prevent damage to the seals and brass piston bearing. Rhino grease is opaque with a yellowish tint. It is normal to turn a graphite color during use. Using non Rhino or equivalent can cause damage and void warranty.

Please check out the video in the imagesto understand proper lubricant (grease) level.

Size: 2.75oz jar