KEZE Silicone Grease Tube PTFE Synthetic Lubricant Sliding Door Grease Automotive Lubrication RV Toilet Seal Lubricant for Plumbing Faucet O Rings Plastic Parts Rubber Seal 1 oz 4-Tube

I do a full maintenance routine and grease everything at least once per month. It takes maybe 20-30 minutes once you get the routine down. My machine is almost at 800hrs and no issues, no weird sounds.. (I should knock on some wood..) Just like any equipment, regular maintenance is key to keeping it going strong. I'm a firm believer in that. Pro-Tip for selecting grease: White lithium grease for the lead screws and metal-to-metal contact areas. Synthetic PTFE grease for the linear rods/gantry.