A new lubricant known as Green Oil has been developed in Italy for lubricating textile machines, especially circular knitting machines. It contains no solvents or solid additives and is environmentally friendly. Its chemistry and physical and technical characteristics are reviewed. Its advantages include the fact that it can be easily removed from the textile, it is odourless, skin-friendly and non-toxic, it can double the life of machine parts and increase needle durability. The results of practical tests carried out on knitting machines is briefly reported.