To be certain, you should:
* Consult your engine's owner's manual: This is the best source of information. The manual will have diagrams showing the exact location.
* Look closely at the engine's bottom: The drain plug is usually a small, hexagonal or square bolt. It may be slightly recessed.
* Check online resources: Search for images of your specific engine model number (found on a sticker on the engine). Images of the engine will often show the drain plug's location.
Safety First: Before attempting any maintenance, ensure the engine is completely cool and turned off. Use the correct size wrench to avoid stripping the plug. Have a drain pan ready to catch the old oil.