General Motors has made a change regarding its problematic L87 V8 engine, which is at the center of several lawsuits. A technical bulletin was sent to dealers addressing the issue, and it involves swapping high-performance Supercar oil for the more accessible FS blend in these engines.
The recall itself followed a federal investigation triggered by tens of thousands of owner complaints, which explains why even minor updates are now getting close attention. Part of the recall remedy was to use Mobil 1 Supercar 0W-40 oil, but now dealers will switch to Mobil 1 FS 0W-40 due to cost and availability issues.
The new oil blend is more readily available and less expensive, with some key differences from the Supercar oil in terms of its marketing and intended use. While both oils share the same viscosity rating, they are aimed at different audiences, with the Supercar blend being marketed for high-performance applications and the FS blend positioned as a more well-rounded option suitable for a wide range of engines.
The FS blend reportedly contains slightly higher levels of phosphorus and zinc than the Supercar oil, which may offer marginally better protection under load. This change is significant, especially given the ongoing lawsuits surrounding these engines.
As a result, drivers should be aware of this update and take necessary precautions to ensure their vehicles are properly maintained.
This change highlights the complexity of addressing a widespread issue like the L87 V8 engine problem, where even minor updates can have significant implications for vehicle owners. It's essential for GM to prioritize transparency and communication with its customers throughout this process.
