General Motors has updated its recommended oil specification for the recalled 6.2-liter V-8 engines, marking another shift in guidance following a widespread recall and a recent investigation by the National Highway Traffic Safety Administration. The change comes amid concerns over a potential failure in the engine’s cylinder heads that could lead to severe internal damage. The automaker is now advising owners to use a specific synthetic oil formulation designed to improve lubrication and reduce stress on engine components under high load.
This latest adjustment underscores ongoing efforts to address reliability issues tied to the L87 engine model. GM has previously issued multiple service bulletins and recalls related to the powertrain, prompting increased scrutiny from regulators and consumers. Vehicle owners with affected models are encouraged to consult official service documents or contact dealerships for updated maintenance instructions. The revised oil recommendation is part of a broader response to ensure long-term engine performance and safety.