An oil extractor machine uses pressure (hot or cold) or vacuum to squeeze or pull oil from nuts, seeds, or plants for cooking, or to remove used motor oil from engines, with types ranging from small home kitchen models (like VEVOR) to large commercial units, using mechanical pressing or pneumatic suction for clean, efficient extraction. Common materials pressed include peanuts, sunflowers, walnuts, and sesame, while engine extractors simplify oil changes without needing to lift the vehicle.