Can you use e85 in a 2004 Oldsmobile alreo with v6?

No, you should not use E85 in a 2004 Oldsmobile Alero with a V6 engine. The 2004 Alero was not designed for E85 fuel. Using E85 in a vehicle not specifically designed for it can cause significant engine damage. The fuel system components and engine materials aren't compatible with the higher ethanol content of E85, leading to potential issues like corrosion, seal damage, and decreased performance.