However, the exact location can vary slightly depending on the year and specific model. It's best to:
1. Consult your vehicle's repair manual: This is the most reliable source for the precise location on your specific engine.
2. Use an online diagram: Search for "[Your Year] Oldsmobile [Your Model] 3.3L engine diagram" to find a picture showing the PCV valve's location. Many sites offer free diagrams.
3. Visually inspect the passenger side valve cover: Look for a small, capped valve with a hose running to either the intake manifold or the air cleaner housing. This is likely the PCV valve.
Remember to be careful when working around the engine compartment. The engine may be hot and there are many other components that could be damaged. If you are unsure about any aspect of this process, it's best to seek professional help.