On: Vegetable Oil for Lubricating Chainsaws (2008)

[buildsjets]

The hydraulic autopilot steering system in my boat uses a biodegradable soy-based hydraulic fluid, and it’s at least 20 years old. Similar non-marine products are readily available on amazon.

https://www.pocomarine.com/shop/garmin-tr-1-biosoy-hydraulic...