Operating temperature -40 to +120 degrees Celsius. Silverhook Red Rubber Grease is a premium quality biodegradable automotive grease for use in hydraulic systems (especially braking systems), clutch components and suspension units where compatibility with natural, styrene butadiene (SBR), and other types of rubber seal is desirable. Due to the vegetable base oil, the grease is resistant to hydrocarbon solvents, notably petrol and diesel. It is fully biodegradable, resistant to solvents, provides good corrosion protection, and has good rubber compatibility. A red dye is incorporated for identification purposes.