Study of the lubricating properties of hybrid liquid paraffin with TiO₂ and CuO as nano-additives for engine oil application

Mineral based paraffin oil (L14480) lubricant finds it difficult to give optimum characteristics for modern engine application. In this work, possibility of hybrid paraffin oil which consists of paraffin oil (PO) and sesame oil (SESO) in equal proportions to be used for engine oil application is investigated. Properties of hybrid paraffin oil and SAE 20W40 were estimated and compared. Estimation of thermal characteristics of hybrid paraffin oil shows it have comparable properties with SAE 20W40. Low viscosity characteristics of hybrid paraffin oil can be improved by addition of EVA particles. Addition of TiO₂ and CuO nanoparticles shows enough improvement in tribological properties of hybrid paraffin oil. Poor oxidative stability of hybrid paraffin oil can be improved by addition of butylated hydroxytoluene (BHT). (paper)