Sainmhíniú fastener, such as a bolt or plug, that secures the drain hole of the oil pan and prevents fluid leakage Tagairt "COM-EN, based on [22.6.2015]: 'Oil drain plug', Engineering-Dictionary.org. http://www.engineering-dictionary.org/Oil_drain_plug"
Nóta The component is often magnetised so that any stray particles of iron will stick to it rather than lodge in some vital orifice.