No one can answer your question until you provide the make, model, year, and engine size of the vehicle you are asking about. You posted the question in Ford Trucks, Suvs, and Mustang. However it is easy to find out. Just park your vehicle on a level surface. Drain the oil and replace the filter. And 4.5 quarts of the correct weight oil. Start the engine and run for 30 seconds. Shutdown and wait 30 minutes. Check the oil level and add as necessary to reach the full mark. You now know the oil capacity of your engine.
7.3 quarts
If you are talking oil for a car it is 4 quarts of oil
4 quarts
5 quarts. Always use a new oil filter when changing the oil.
4 quarts is what I use.
3 U.S. quarts
The 4.0L V6 takes 5 quarts of oil The 4.6L V8 takes 6 quarts of oil
3.9 quarts
4.5 quarts with engine oil filter change
5 quarts WITH FILTER CHANGE
6 quarts 5w30
The gas engines use five quarts.