The power steering fluid reservoir on a 1998 Oldsmobile Intrigue is typically located
under the hood, near the power steering pump. It's usually a small, clear or translucent reservoir with markings indicating the minimum and maximum fill levels. Look for a cap with a power steering symbol (often a steering wheel) on it.
It's best to consult your owner's manual for the exact location and instructions. The manual will have diagrams and specific information for your vehicle model. If you don't have the manual, you can often find a digital version online through a search engine or the manufacturer's website.