* Fuel System Damage: E85 contains a significantly higher percentage of ethanol (85%) than regular gasoline (typically around 10%). Ethanol is corrosive and can damage rubber and plastic components in the fuel system. This includes fuel lines, seals, gaskets, and even the fuel pump. The damage might not be immediately apparent, but it could lead to leaks, reduced fuel efficiency, and eventual failure of these components.
* Engine Damage: Ethanol is also more hygroscopic than gasoline – it absorbs water from the atmosphere. This increased water content can lead to rust and corrosion inside the fuel tank and fuel lines, potentially causing blockages or contaminating the fuel injectors. Ethanol's higher oxygen content can also cause the engine to run leaner, potentially leading to overheating and damage to pistons, valves, and the catalytic converter.
* Sensor Damage: The higher ethanol content could also damage or interfere with the operation of oxygen sensors and other engine sensors, leading to inaccurate readings and potentially causing the engine control unit (ECU) to malfunction.
* Lubrication Issues: Some reports suggest that ethanol can affect the lubrication properties of the fuel, potentially leading to increased wear and tear on engine components.
The severity of the damage depends on several factors:
* How long the E85 was in the tank: The longer the E85 remains, the more time it has to cause damage.
* How much E85 was used: Even if only a small amount is used, some damage could still occur.
* The condition of the fuel system before the incident: An already worn-out fuel system will be more vulnerable to damage.
What to do:
If 15 gallons of E85 have been put into the Astro van, the best course of action is to:
1. Drain the fuel tank as completely as possible. This minimizes the amount of E85 that remains in the system.
2. Flush the fuel system: This usually involves adding a fuel system cleaner and running the engine for a while, then refilling with the correct fuel (regular gasoline).
3. Monitor the vehicle closely: Watch for any unusual noises, performance issues, or warning lights.
4. Consult a mechanic: A professional mechanic can inspect the fuel system for damage and address any issues that may arise. Early detection and repair are key to minimizing long-term problems.
Ignoring the issue could lead to costly repairs down the line. Getting it checked out promptly is strongly advised.
