The short answer is that it uses Dexos1 Gen 2 engine oil, most commonly SAE 5W-30. Always verify the exact viscosity for your climate on the oil fill cap or in the owner's manual.
In more detail, the 2015 Silverado’s 5.3-liter V8 (the GM V8 family used in that year) is designed to run on Dexos1 Gen 2 oils. For typical driving in temperate conditions, Dexos1 Gen 2 with a 5W-30 viscosity is the standard recommendation. In very cold environments, GM may specify a lighter cold-weather option (such as 0W-30 or 0W-20) if approved for your region, but you should not substitute non-Dexos1 Gen 2 oils. Oils can be conventional, synthetic-blend, or full synthetic as long as they meet Dexos1 Gen 2 certification. The engine holds roughly 8 quarts of oil with filter, and the exact viscosity required is often printed on the oil fill cap.
Oil options and viscosity
These are the main options you’ll encounter when selecting oil for this truck:
- Dexos1 Gen 2 certified oil, commonly SAE 5W-30 (suitable for most climates; can be full synthetic or synthetic-blend).
- Dexos1 Gen 2 certified oils with lower winter viscosities such as 0W-30 or 0W-20 (may be specified for very cold climates; confirm in the manual).
- Always ensure the product explicitly carries the Dexos1 Gen 2 certification and matches the vehicle’s required viscosity.
Concluding: For everyday use, 5W-30 Dexos1 Gen 2 is the standard recommendation for the 2015 Silverado 5.3 V8. If you live in a extreme climate or tow regularly, confirm the exact viscosity with the manual or your dealer to ensure optimal protection.
How to verify the exact specification for your truck
Check the owner's manual, the oil fill cap under the hood (the recommended viscosity is often stamped there), and GM’s official documentation for your VIN. When in doubt, consult a GM service advisor or the dealership to confirm the Dexos1 Gen 2 viscosity and any climate-specific exceptions.
Summary
In summary, a 2015 Chevrolet Silverado 5.3L V8 requires Dexos1 Gen 2 certified oil, with SAE 5W-30 being the typical choice. Always verify the exact viscosity for your climate on the fill cap or in the manual, and ensure the oil is Dexos1 Gen 2 compliant. Follow GM’s service intervals and use the appropriate synthetic type if towing or operating under demanding conditions.
What kind of oil does a 2015 Chevy 1500 5.3 L take?
In general, the top Chevy Silverado 1500 oil type is SAE 0W-20 full synthetic motor oil from ACDelco's dexos1 standard for the 5.3L and 6.2L engines.
Can I use 5W-30 instead of 0W-20 in Silverado?
Yes, you can use Dexos1 Gen 2 or Gen 3 5W-30 in your 2025 Silverado engine while you're in a specific location, especially if 0W-20 is unavailable. It is recommended to use 0W-20 for fuel economy (CAFE standards), but the 5.3L Gen V V8 engine is mechanically capable of running 5W-30, particularly in hot climates.
What is the best oil for a 5.3 L V8?
Most recent Silverado 1500 models with the 5.3L V8 or 6.2L V8 engines typically use SAE 0W-20 full synthetic motor oil.
How many quarts of oil does a 2015 Chevy Silverado 5.3 L V8 take?
8 quarts
Engine Oil
Capacity: 8 quarts (with filter).