Refinery Products
crude oil = oil(=petroleum) in its natural state before it has been processed
oil refining = an essential process for transforming crude oil into marketable products
furnace = NORTH AMERICAN an appliance fired by gas or oil in which air or water is heated to be circulated throughout a building in a heating system
pasty = like paste
viscous = having a thick, sticky consistency between solid and liquid
lubricate = apply a substance such as oil or grease to (an engine or component) so as to minimize friction and allow smooth movement (see also lubricant (https://t.me/espedition/1155))