GM generally requires Dexos1 Gen 2 synthetic motor oil for the 6.2-liter V8 engines affected by recalls, with 0W-20 being the most common viscosity. The exact specification can vary by model year and climate, so check the recall notice or ask a GM dealer for your VIN-specific guidance.
Oil specification for the 6.2 recall
In recall scenarios, GM's service data typically specifies Dexos1 Gen 2 oil and often indicates the viscosity appropriate for the vehicle in question. The key point is to use Dexos1 Gen 2 synthetic oil that meets GM's certification, with 0W-20 being the default in many cases.
Common Dexos1 Gen 2 viscosities used with the 6.2
Below are the viscosities GM commonly authorizes for 6.2L engines, noting that availability and exact requirement depend on model year and climate.
- Dexos1 Gen 2 0W-20 synthetic
- Dexos1 Gen 2 5W-30 synthetic
Notes: The precise viscosity for your vehicle should come from the recall bulletin or your dealer. Using the wrong viscosity can affect engine protection and may impact the recall remedy's efficacy.
How to verify the correct oil for your recall
To ensure you use the right oil for your specific recall, follow these steps, which align with GM's recall guidance to verify via VIN and official notices.
- Review the official recall notice and GM's service bulletin for the recall you are dealing with, including the recommended oil specification.
- Check your vehicle’s Owner’s Manual or GM's Dexos oil specification page to confirm the exact Dexos oil and viscosity for your model/year.
- Call or visit an authorized GM dealer with your VIN to confirm the precise oil requirement for the recall remedy.
Following these steps will ensure you meet GM's requirements for the recall repair.
What if Dexos1 Gen 2 0W-20 isn't available?
If 0W-20 Dexos 1 Gen 2 is unavailable, speak with a GM-certified technician for an acceptable alternative within the Dexos certification. Do not substitute non-Dexos oil, as this can affect performance and warranty coverage.
Dealers can typically source the approved oil or provide guidance on interim options until the right product is available.
Summary
In GM's recall guidance for 6.2L engines, the recommended oil is Dexos1 Gen 2 synthetic, most often 0W-20, with 5W-30 as an alternative in some circumstances. However, the exact specification depends on the vehicle and recall details. Always verify via the recall notice, VIN, and dealer guidance to ensure the remedy is effective.