"Engine lubricants" refers to special substances, like oil, that are used to reduce friction and heat in engines. They prevent wear and tear, and help engines perform smoothly. Full definition
But other products have no apparent connection with farming, such as jet engine lubricants and brake fluid from bovine fatty acids, which are derived from tallow, which is itself produced from fat and bone. (discovermagazine.com)
He then continued with the group to carry out his PhD with Dr Moray Stark researching the effects of biodiesels on engine lubricants during usage. (york.ac.uk)
This Code of Practice will help ensure that a particular engine lubricant meets its performance specifications. (americanchemistry.com)