Bamban, If you use grease on any milling machine or lathe, the grease will eventually mix together with fine metal shavings and will form a grinding paste, which will cause premature wear on mating parts. Besides that, grease will also tend to attract dust and sand, aggravating the wear of mating parts. If in doubt, use way oil to lubricate your machine. Way oil is designed to stick to metal surfaces, even if you use water and soluable oil cutting fluid and also protects against rusting. Oiled parts are easy to clean and re-oil. In my humble opinion, "OIL" only. Geoffrey.