ICON recommends a National Lubricating Grease Institute grade 2 molybdenum disulfide fortified grease for Delta Joints (NLGI #2 EXTREME PRESSURE GREASE WITH MOLY).  Super Lube Multi-Purpose (NLGI #2 MULTI-PURPOSE SYNTHETIC GREASE W/SYNCOLON (PTFE)) /  Lucas Oil Red & Tacky (NLGI #2 LUCAS RED “N” TACKY) for urethane pivots. These greases are available at most automotive part stores.