Vented oil change cap

A system for removing oil from an oil reservoir of an engine, comprising:

• a removable vented oil cap configured to interface with an opening in the oil reservoir, the removeable vented oil cap including
• a cap body including a body portion having a hollow plug positioned around the body portion, the cap body having a bottom surface configured to be introduced through the opening on the oil reservoir with the hollow plug adjacent the opening,
• a neck extending from the cap body, the cap body and the neck defining an oil channel extending from and through the bottom surface through the cap body and the neck to provide a continuous pathway for oil to flow from the oil reservoir through the oil channel to exit the removable vented oil cap, and
• a vent tube coupled with the cap body and extending beyond the bottom surface of the cap body in a direction opposite the neck, the vent tube defining an interior passage through which gas exchange occurs,
• wherein the cap body further defines a vent channel offset and separate from the oil channel, the vent channel aligning with the interior passage of the vent tube to provide gas exchange through the vent tube and through the cap body to prevent vacuum formation during passage of oil through the oil channel;
• and
• a container configured to be secured to the neck of the removeable vented cap to collect oil following passage of oil from the oil channel.

A method of removing oil from an oil reservoir of an engine, comprising:

• inserting a portion of a removable vented oil cap into an opening of the oil reservoir, the removeable vented oil cap including
• a cap body including a body portion having a hollow plug positioned around the body portion, the cap body having a bottom surface configured to be introduced through the opening on the oil reservoir with the hollow plug adjacent the opening,
• a neck extending from the cap body, the cap body and the neck defining an oil channel extending from and through the bottom surface through the cap body and the neck to provide a continuous pathway for oil to flow from the oil reservoir through the oil channel to exit the removable vented oil cap, and
• a vent tube coupled with the cap body and extending beyond the bottom surface of the cap body in a direction opposite the neck, the vent tube defining an interior passage through which gas exchange occurs,
• wherein the cap body further defines a vent channel offset and separate from the oil channel, the vent channel aligning with the interior passage of the vent tube to provide gas exchange through the vent tube and through the cap body to prevent vacuum formation during passage of oil through the oil channel;
• securing a container to the neck of the removeable vented oil cap;
• and
• tilting the engine to introduce oil from the oil reservoir into the oil channel and then into the container.