Castrol Tribol™ GR 3020/1000 PD (previously called Tribol 3020/1000) is a range of greases formulated from highly refined petroleum base oils, a lithium thickener, and Tribol Grease Oil Additive (TGOA). The TGOA additive package outperforms all other Extreme Pressure (EP) and Anti-Wear (AW) additives because of its unique action on frictional surfaces. The base oils are high-viscosity mineral oils forming a stable lubricant film to withstand high continuous loads, shock loads and vibrations. The TGOA additive package is activated by high specific loads and corresponding temperatures causing a chemical physical reaction. This results in an equalisation of surface roughness without creating abrasion.