Answer: The 2020 Yukon requires Dexos1 Gen 2 synthetic motor oil; the correct viscosity depends on the engine: 5W-30 for the 5.3L V8 and 0W-20 for the 6.2L V8.
The Yukon lineup for 2020 offers two V8 engines, and the oil specification is Dexos1 Gen 2. This article outlines the exact oil type, viscosity, and approximate capacity for each engine, and provides guidance on maintenance and where to verify in the manual.
Engine options and oil specifications
Below are the oil requirements broken down by engine to help owners choose the right oil and follow GM’s guidance for changes and maintenance.
5.3L EcoTec3 V8
The 5.3L V8 is the most common Yukon engine for 2020. It requires a Dexos1 Gen 2-certified motor oil with a viscosity of 5W-30. Synthetic oil is recommended for longevity and better protection in extreme temperatures.
- Oil type: Dexos1 Gen 2 certified motor oil
- Viscosity: 5W-30
- Capacity (with filter): approximately 8 quarts
In practice, owners should follow GM’s recommended oil-change intervals and use a high-quality synthetic 5W-30 that meets the Dexos1 Gen 2 specification. Always verify the exact capacity and interval in the owner's manual or on the engine oil filler cap.
6.2L EcoTec3 V8
The 6.2L V8 is a larger option for the Yukon and also uses Dexos1 Gen 2 oil, with a viscosity suited to the engine’s design and operating conditions. For many 2020 Yukon configurations, this engine calls for 0W-20 Dexos1 Gen 2 oil to optimize cold starts and efficiency.
- Oil type: Dexos1 Gen 2 certified motor oil
- Viscosity: 0W-20
- Capacity (with filter): approximately 8 quarts
As with the 5.3L, adhere to GM’s recommended change intervals and use a quality synthetic oil that meets Dexos1 Gen 2. Check the manual or the oil fill cap for the exact specification and capacity for your specific Yukon configuration.
Additional notes and tips
Oil choice is a key factor in engine longevity and performance. If you’re unsure which engine your Yukon has, or if you recently changed to a different configuration, consult the owner’s manual, the oil-cap stamp, or your GMC dealer to confirm the exact Dexos specification and viscosity required for your vehicle.
Summary
The 2020 GMC Yukon requires Dexos1 Gen 2 motor oil. The recommended viscosity depends on the engine: 5W-30 for the 5.3L V8 and 0W-20 for the 6.2L V8. Use synthetic oil and follow GM’s maintenance intervals, keeping the capacity around eight quarts with a filter. Always verify the exact specification in the owner's manual or with a dealer.