However, you'll need to get under the vehicle to see it exactly. You'll likely need a jack and jack stands for safety. Once underneath, look for a bolt, usually somewhat hexagonal, on the bottom of the engine's oil pan. It might be slightly recessed.
Important Safety Note: Always consult your owner's manual for the precise location and any specific instructions or cautions. Working under a vehicle can be dangerous; ensure the vehicle is properly supported on jack stands and never work under a vehicle supported only by a jack.