For the 2017 Chevrolet Silverado or GMC Sierra equipped with the 5.3-liter EcoTec3 V8, the recommended engine oil is Dexos1 Gen 2 certified synthetic oil, typically 0W-20. This is the standard specification for most versions of the engine, though some climates or specific models may allow 5W-30; always verify in the owner's manual or on the under-hood oil specification label.
Oil type and viscosity
The 2017 5.3L EcoTec3 is designed to use Dexos1 Gen 2 oil, with 0W-20 being the common recommendation for normal driving in most regions. Depending on climate or service conditions, Dexos1 Gen 2 5W-30 may be listed as acceptable in some manuals; however, 0W-20 is the default choice for fuel efficiency and cold-start protection.
Dexos1 Gen 2 compatibility
Dexos1 Gen 2 is the certification GM requires for modern gasoline engines, ensuring compatibility with emission systems and warranty coverage. Oils meeting Dexos1 Gen 2 are widely available from major brands such as Mobil 1, Pennzoil, Castrol, and Valvoline. Always confirm the label reads Dexos1 Gen 2 to ensure proper certification.
When selecting oil, consult your vehicle’s owner’s manual or the under-hood oil fill cap for the exact specification and viscosity, as GM’s guidance can vary slightly by model year and drivetrain.
Key oil options and considerations:
- Dexos1 Gen 2 0W-20 full synthetic oil — the standard recommendation for most climates and driving conditions.
- Dexos1 Gen 2 5W-30 full synthetic oil — listed as acceptable in certain climates or configurations; confirm with your manual for your specific vehicle.
- Only use oils that carry the Dexos1 Gen 2 certification to maintain warranty coverage and engine protection.
In summary, for the 2017 5.3 engine, the default and most common choice is Dexos1 Gen 2 0W-20 synthetic oil, with 5W-30 as a potential alternative only if your manual explicitly allows it for your model and climate.
Oil capacity and maintenance intervals
Knowing the correct oil capacity helps ensure you add the right amount during a change, and following the maintenance schedule protects the engine over time. The 5.3L V8 typically holds about 8 quarts of engine oil with filter, though exact capacity can vary slightly by drivetrain and pan design. Always verify the exact capacity for your VIN if you’re unsure.
- Oil capacity: approximately 8 quarts (roughly 7.5–8.5 qt depending on pan and filter).
- Maintenance intervals: follow the vehicle’s Oil Life Monitoring System. With synthetic Dexos1 Gen 2 0W-20, intervals commonly range from about 7,500–10,000 miles under normal driving, but severe service or extreme conditions can shorten this to roughly 3,750–5,000 miles.
- Brand and certification: choose a Dexos1 Gen 2 certified oil from a reputable brand and replace the oil filter during changes.
Always refer to the owner’s manual or the vehicle’s oil life monitor for the exact replacement schedule and fluid capacity for your specific model and drivetrain.
Summary
The 2017 5.3L V8 in Silverado/Sierra models typically uses Dexos1 Gen 2 certified synthetic oil, with 0W-20 as the standard viscosity. 5W-30 is occasionally permitted depending on climate or model specifics, but 0W-20 is the default recommendation. Expect about 8 quarts of oil capacity and follow the vehicle’s oil life monitor to schedule changes, usually around 7,500–10,000 miles under normal conditions. Always verify exact specifications in your owner's manual or on the under-hood label.