Lucas Oil 10533 White Lithium Grease - 8 Ounce Squeeze Tube, 2 Pack

I use Lucas Oil's White Lithium Grease https://www.amazon.com/Lucas-Oil-10533-Lithium-Grease/dp/B06XY6QKS7 for the vertical threaded rods, and apply it using https://makerworld.com/en/models/481393-ez-z-luber-the-eazy-way-to-lubricate-the-z-axis . The rest of the parts that need lubrication, I use https://www.tangledfilament.com/oil-stick .

I just did a ton of research on this... For the grease it's straight from Bambu's Recommendations 92003https://www.amazon.com/Super-Lube-92003-Lubricating-Translucent/dp/B0081JE0OO/ref=sr_1_3 Also for grease, they recommend LucasOil White Lithium NLGI #2:https://www.amazon.com/gp/product/B06XY6QKS7/ref=ewc_pr_img_1?smid=A17BZOLZKLWVN9&psc=1 For the Oil, I went with 52004. For me the difference was that 52004 doesn't have PTFE, and is actually mentioned in earlier bambu documentation as a higher quality oil on this page: https://wiki.bambulab.com/en/x1/maintenance/basic-maintenance it's harder to find 52004, but place like Grainger carries it (I picked it up in store locally! but you can order it too)https://www.grainger.com/product/SUPER-LUBE-Hydraulic-Oil-Synthetic-Lightweight-45NA65 Also it's on amazon but you have to click "all buying options":https://www.amazon.com/Super-Lube-52004-Lightweight-Translucent/dp/B00175VGUA/ref=sr_1_2

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.