Zerks

Zerks are small metal pipes or fittings used in internal combustion engines to drain oil from the crankcase. They are typically connected to the base of the dipstick or the side of the engine block. The purpose of a zerks, also known as drain plugs or oil drain fittings, is to allow the engine's oil to be drained from the crankcase for maintenance or repair.

Zerks are usually found on most car engines, but they may be missing on certain models or types of vehicles. They are typically designated as "repair covers" or "drain plugs" on the engine manual or specifications. Zerks are usually located near the oil pan and may be operated by a screw, plug, or other type of fastener.

The act of attaching a zerks or multitool to an oil drain plug is called "zerking." This process involves unscrewing the plug, allowing the oil to drip out, and then reattaching the zerks or multitool. Zerks are also used to drain other fluids, such as transmission oil or brake fluid, from the respective units of the vehicle.

Most vehicles come with instructions on how to locate and use this type of fittings, as they are relatively common. Incorrect operation of zerks can result in oil spills or damage to the engine, making proper maintenance an essential step in vehicle maintenance. Zerks are an essential component of the vehicle's maintenance system, allowing the engine and other systems to function as intended.