Quicksilver Extreme Grease Quicksilver Extreme Grease is a new grease that provides better rust and corrosion protection than the greases it replaces. It also provides better wear protection in high temperatures, high load applications. Extreme grease is a calcium-sufonate based NLGI 2 grease the meets GCLB requirements and can be used in the applications below Drive Shaft Spline Engine Coupler Gimbal Bearings U joint This replaces the Engine CouplerSpline Grease, U-JointGimbal Bearing Grease a