Here's why:
* Engine variations: Even within the same year and model, there can be slight variations in engine configurations that affect oil capacity.
* Oil type: Different oil types (synthetic, conventional, etc.) have different densities, which can slightly affect the amount of oil the engine holds.
* Oil filter: The type of oil filter used can also influence the total oil capacity.
Here's what I recommend:
1. Check your owner's manual: The most reliable information will be in the owner's manual for your specific 2001 Nissan Xterra. Look for a section on engine specifications or maintenance.
2. Consult a reputable mechanic: If you can't find the information in your owner's manual, a qualified mechanic can easily check the recommended oil capacity for your vehicle.
3. Look at the dipstick: While this won't give you the exact capacity, it will tell you how much oil the engine is currently holding.
Important Note: Never overfill your engine with oil. Overfilling can cause damage to your engine.
