What kind of oil does a 2019 Chevy 3500 diesel take?
It uses Dexos2-certified full-synthetic engine oil, typically SAE 5W-30.
In detail: The 2019 Silverado 3500HD with the Duramax 6.6L V8 Turbo Diesel (L5P) requires Dexos2-certified oil. The most common grade is 5W-30 for temperate conditions, though the exact viscosity can vary by climate and driving conditions. Always verify with the owner's manual or a GM dealer. The oil capacity for a full change is roughly 11 quarts, including the filter.
Dexos2: GM's standard for diesel and gasoline engines
Dexos2 is GM's approved engine oil specification designed to protect emission systems and maintain engine health in modern GM engines. Oils meeting Dexos2 are the recommended choice for the Duramax-powered 2019 3500HD to ensure warranty coverage and optimal protection.
Viscosity considerations across climates
The typical recommended viscosity for most 2019 Duramax trucks is Dexos2-certified 5W-30. In very cold climates, Dexos2 oils such as 0W-30 may be recommended if approved by GM, while hot climates may tolerate a heavier grade such as 5W-40 when specified in the manual. Always follow the viscosity listed in your owner's manual and consult a GM service advisor for region-specific guidance.
Practical buying tips
Look for Dexos2 on the oil label and ensure the oil is full synthetic. Use the recommended viscosity as shown in the manual, and avoid non-Dexos oils that can affect warranty coverage and engine protection.
Maintenance considerations
Oil capacity is around 11 quarts for a full oil change, and the service interval is determined by GM's oil life monitoring system and driving conditions. When in doubt, have the oil analyzed or replace more frequently if towing or heavy-duty use is common.
Summary: For a 2019 Chevy Silverado 3500HD Duramax, use Dexos2-certified full-synthetic oil, typically 5W-30, with climate-specific considerations as guided by the owner's manual. The approximate capacity is about 11 quarts per change; always verify with official GM documentation for your exact configuration.
