you should never use any (grease) on your sewing machines that is not specifically ---SEWING MACHINE OIL---
the Tractor Grease would gum up your works and cause an expensive trip to a repair shop.
you can get sewing machine oil at sewing machine dealers, stores like Joannes, on line at Clotilde's, Nancy's notions, Connecting threads---among many others. do not use products that are not meant for sewing machine- that's a costly mistake.