Environmentally friendly lubricants are in demand. This also applies to forestry work with chainsaws. In this area, even the use of biologically harmless oils is mandatory everywhere. By design, the lubrication of the chain is what is known as “loss lubrication” and the lubricant ends up on the forest soil, together with the saw dust. Unfortunately in former times this application was used as a cheap and secret way to dispose waste oils. Thankfully this is not done any more today. Usually the basis for modern chainsaw lubricants are vegetable oils (e.g. rapeseed oil), which we all know from preparing delicious French fries in our deep fryers at home. However, this vegetable oil still lacks essential components to withstand the violent stresses that occur when a chainsaw is used.