* Engine Compatibility: E85 is a blend of 85% ethanol and 15% gasoline. It requires engines specifically designed to run on high ethanol blends. Your 1994 van likely has an engine designed for gasoline and would not be compatible with E85.
* Fuel System Issues: E85 can damage older fuel lines, seals, and other components in a gasoline-based fuel system. The ethanol can corrode metal parts and degrade rubber seals over time.
* Performance Degradation: Using E85 in an engine not designed for it can cause reduced fuel economy, decreased power, and potential engine damage.
Here's what you should do:
1. Check Your Owner's Manual: Your manual should have a section on fuel types and specifically list whether your van is compatible with E85.
2. Consult a Mechanic: A qualified mechanic can inspect your vehicle and advise you on the risks and benefits of using E85.
Remember: It's generally safer and more reliable to stick with the fuel type your vehicle is designed for.