Typically about 5 quarts (4.7 liters) of engine oil, with a new filter.
The 4.8 L V8 family covers multiple GM engines used in trucks and SUVs, and oil capacity can vary slightly by model year, engine code, and oil pan size. This article outlines the standard figure and how to confirm the exact requirement for your vehicle.
Standard capacity for typical 4.8L V8 configurations
For the majority of GM 4.8L V8 applications, the official oil capacity is 5 quarts (4.7 liters) with the filter replaced during an oil change.
- 5 quarts (4.7 liters) of engine oil with a new filter
- Some heavy‑duty or long‑pan configurations may require up to 6 quarts (5.7 liters) with filter
Note: Always verify with your owner's manual or GM service information for your exact engine code and model year, as capacity can vary by configuration.
Engine variants to consider
Capacity can differ depending on the specific 4.8L V8 variant (for example, different engine codes and oil pans). When in doubt, consult the vehicle’s manual or contact a dealer to confirm the precise specification for your exact engine.
How to verify and fill correctly
To ensure you fill to the correct level and avoid overfill, follow these steps.
- Warm the engine to operating temperature, then turn it off and let the oil settle for a few minutes.
- With the vehicle on a level surface, place a drain pan under the oil pan and remove the drain plug to drain the old oil; remove and replace the oil filter as part of the service.
- Reinstall the drain plug securely and begin pouring in the oil. Start with about 4.5–5 quarts (approximately 4.3–4.7 liters) depending on your manual.
- Run the engine for a minute, then turn it off and wait several minutes for the oil to settle. Check the dipstick and top up in small increments until the level sits between the full marks.
- Look for leaks around the drain plug and filter, and ensure the level is correct on a level surface with the engine off.
Important: Dipstick readings can vary slightly by tool and perspective. Always aim for a level between the full marks when the engine is cool and on a level surface after an oil change.
Summary
For most GM 4.8L V8 engines, plan on about 5 quarts of oil with a new filter, with some configurations capable of taking up to 6 quarts. Exact capacity depends on engine code, oil pan size, and optional equipment. Always verify the specification in the owner's manual or with a GM service source for your exact vehicle, and use the dipstick to ensure proper level after an oil change.
In brief
If you’re unsure, start with 5 quarts, check the level after running the engine and allowing it to settle, and add small amounts as needed until the dipstick indicates full on a level surface. This approach helps prevent overfill and ensures you meet your vehicle’s exact requirements.