How many quarts of oil does a 3.0 Duramax take?
The 3.0 Duramax typically requires about 7.5–8 quarts of engine oil for a full change when a new filter is installed; roughly 7 quarts if you don’t replace the filter. Exact figures can vary by model year and configuration, so always check the owner's manual or GM service information for your specific VIN.
Oil capacity at a glance
Here are the typical capacity figures mechanics and owners use when planning oil changes for the 3.0 Duramax.
- Without a new oil filter: about 7 quarts.
- With a new oil filter: about 7.5–8 quarts.
- Some manuals and dealer literature list up to 8 quarts as the total capacity when filled to the full mark with a fresh filter.
In practice, plan for roughly 7.5–8 quarts for a full oil change with a new filter, and verify the final level with the dipstick after the engine runs and then cools.
Model-year and variant notes
The 3.0L Duramax used in GM’s Silverado/Sierra lineup maintains a similar overall capacity across recent model years, but there can be small variations due to filter size, oil cooler integration, and service procedures. To be certain, confirm the exact specification in the owner’s manual or GM Service Information for your vehicle’s year and VIN. If an aftermarket or cartridge-style filter is used, capacity may shift slightly.
Tips for accurate oil level readings
To ensure you don’t underfill or overfill, follow these steps before checking the level:
- Park on level ground and let the engine cool for at least 10 minutes after shutdown.
- Check the dipstick when the engine is cold or at the temperature specified in the manual.
- Wipe the dipstick clean, reinsert fully, then pull it out to read the level against the marks.
- If needed, add small amounts of oil (0.25 quart increments) and recheck until the correct range is reached.
Following these steps helps ensure you reach the proper oil level without overfilling.
How to plan and buy oil
When budgeting for an oil change, shops typically estimate 7.5–8 quarts of oil plus a new filter. If you reuse the old filter, you’ll generally be closer to the lower end; with a new filter, plan for the higher end. Always verify the final level with the dipstick and follow the vehicle’s service manual.
Summary
For the 3.0 Duramax, expect roughly 7.5–8 quarts of engine oil for a full change with a new filter, with about 7 quarts if the filter isn’t replaced. Exact capacity can vary by model year and configuration, so consult the owner’s manual or GM service information for your specific vehicle and always confirm the final level using the dipstick.
How much oil does a 2025 GMC Sierra 3.0 Duramax take?
The 2025 GMC Sierra 3.0 Duramax has an oil capacity of 7 quarts when including the oil filter. The recommended oil type is a 0W-20 full synthetic that meets the GM dexosD specification.
- Capacity: 7 quarts (with oil filter)
- Oil Type: 0W-20 Full Synthetic dexosD specification
- Oil Change Interval: Every 7,500 to 10,000 miles under normal conditions, or every 5,000 miles for heavy use like towing.
- Recommendation: For an accurate reading, warm the engine, let it sit for about 15 minutes, and then check the dipstick.
What oil is recommended for 3.0 Duramax?
The recommended oil for a 3.0L Duramax is 0W-20 full synthetic oil that meets the GM DexosD specification. This is required for optimal performance, fuel efficiency, and to maintain the vehicle's warranty. You will need 7 quarts for a full oil change.
Key oil specifications
- Viscosity: 0W-20
- Type: Full synthetic
- Specification: GM DexosD certified
- Capacity: 7 quarts
Recommended brands
- ACDelco DexosD: This is the factory-recommended brand.
- Mobil 1 Dexos D: A certified and recommended alternative.
- Amsoil 0W-20 diesel oil: Available, though it may not have the official DexosD certification on the label.
Important considerations
- Warranty: Using an oil that is not DexosD certified can void your powertrain warranty.
- Certification: Ensure any oil you use has the "DexosD" certification on the label, not just the words.
- Engine design: The engine is designed with tight clearances that are compatible with the 0W-20 viscosity.
What oil is recommended for 3.0 EcoDiesel?
The recommended oil for a 3.0L EcoDiesel engine is 5W-40 full synthetic meeting the Chrysler MS-12991 standard, especially for 2020 and newer models. Older models (2014-2019) may have initially recommended 5W-30, but an upgrade to 5W-40 is now suggested due to bearing issues in those model years. Examples of compatible oils include Mopar 5W-40 or Penzoil Platinum Euro.
For 2020 and newer models
- Type: 5W-40 full synthetic
- Standard: Chrysler MS-12991
- Examples: Mopar 5W-40, Penzoil Platinum Euro
For 2014-2019 models
- Initial recommendation: 5W-30 synthetic
- Current recommendation: 5W-40 full synthetic
- Reason for change: A service bulletin upgraded the recommendation to 5W-40 to address bearing failures experienced in 2016 models.
- Examples of compatible oils: Shell Rotella T6 5W-40 or Mobil 1 Turbo Diesel Truck 5W-40.
How often should I change the oil on my 3.0 Duramax diesel?
https://www.duramaxnew... The 3.0 Duramax Diesel requires an engine oil change every 7500 miles or less and the costs could add up over the years. many people prefer to change their engine oil so I made this guide to show how I perform basic maintenance on my own truck.
