Castrol Tribol GR 3020/1000 Range (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. The results of the TGOA additives can be compared with a rolling process in the micro-range. The surface roughnesses are gradually leveled and smoothed. In smoothing the working surfaces, the loads are distributed over increasing areas and the actual load carrying areas are enlarged. During the running-in process, the TGOA additive package creates an optimum of smooth contact surfaces. If, because of shock loads, or stop-and-go operation, surface roughness peaks redevelop, the TGOA additives are automatically reactivated. Surface roughness is again equalised and lubrication optimised. Corrosion and oxidation inhibitors help maximise effective rust protection and long life of the grease. The Tribol GR 3020/1000 PD Range contains NLGI consistency grades commonly available for these types of lubricants.