I just got a Frontier SS1067B fertilizer spreader. This is my first spreader. The manual has this advice about maintenance:
After each use:
1. Be sure to thoroughly wash the machine without using excessive pressure especially on the moving parts. It is particularly important to wash the implement after using salt or fertilizer. This will help prevent the caustic chemicals in the salt and fertilizer from destroying the metal of the machine.
2. Carefully dry the machine.
3. Apply a thick layer of grease to all exposed moving parts.
4. Apply a film of biodegradable oil in crevices and corners.
What is biodegradable oil, and why is it recommended instead of something like WD40?
And, anyone have some learned from experience maintenance tips to share with me? Thanks.