However, a good general guideline is:
* At idle (warm engine): Around 10-20 PSI. Slightly lower is acceptable, especially if the engine is already well-worn.
* At operating temperature and higher RPMs (e.g., 2000-2500 RPM): 30-50 PSI is typical.
Crucially: The *most* important thing isn't a specific number, but rather consistent pressure within the normal range across different engine speeds. A fluctuating or dropping oil pressure is a much bigger concern than a slightly low reading at idle when the engine is warm.
If you have concerns about your oil pressure:
* Consult your owner's manual: It will likely have specific recommendations for your vehicle's engine.
* Have a mechanic check it: They have the proper tools and expertise to accurately assess your oil pressure and identify any potential problems. Don't rely solely on the dash gauge; it can be inaccurate.
Low oil pressure can indicate serious engine problems, such as a failing oil pump, worn bearings, or low oil level. Ignoring low oil pressure can lead to catastrophic engine damage.