The UK Environmental Agency requires the use of biodegradable hydraulic oil in tracked machinery carrying out work on its behalf. Environment Agency policy stipulates that all companies hiring tracked excavators to it will have to provide models that use biodegradable hydraulic oil.

"If the machines are using mineral oil and a leak occurs then long-term damage can be caused to the plants and wildlife in and around the watercourse. Biodegradable oil poses much less of a threat and minimises any damage that a spill could incur."