Fuel lubricity prevents wear between metallic parts in relative motion inside the injection system of combustion engines. Among diesel fuels. paraffinic (gas-to-liquid or hydrotreated oils) and biodiesel (methyl esters) fuels are emerging since some of them are renewable and. in the case of paraffinic fuels. https://www.poolsproductscanadas.shop/product-category/maytronics-dolphin-parts/