Worst Disadvantages associated with E20 and E80 fuels
Ethanol-blended petrol has started to gain popularity in India and in many other countries due to its increasing price and concerns about the environment. Biofuel derived from plant material like sugarcane, corn or maize. There is a push to use "fuel blends" such as E20 (20% ethanol + 80% petrol) and E80 (80% ethanol + 20% petrol) to cut crude oil imports and decrease car emissions.
Ethanol-blended fuel has several advantages, but there are also a number of disadvantages that vehicle owners should consider before making the switch. Read on to discover the 5 key cons of E20 and E80 petrol.
1. Lower Fuel Efficiency
The downside of ethanol-blended petrol is that it is less fuel-efficient. Compared with conventional petrol, ethanol has a lower energy content, so vehicles may need more fuel to travel the same distance.
Key impacts include:
- Reduced consumption as opposed to conventional petrol.
- Increased fuel consumption.
- As a result, a loss of driving range per tank.
- The effect is generally more noticeable in E80 fuel due to its higher ethanol content.
2. Compatibility Issues with Older Vehicles
Numerous older vehicles do not perform well on higher ethanol blends. Using E20 or E80 fuel for a prolonged period of time may impact certain parts of the fuel system.
Common issues include:
- Damage to rubber hoses and seals.
- Holes and cracks in fuel lines.
- Corrosion of some metal parts.
Some older vehicles may need adaptation before they are able to run on higher E20 blends, but newer cars have become more E20-friendly.
3. Higher chance of corrosion.
Etanol is hygroscopic and will absorb moisture from the air. Long-term, this can cause corrosion and rust within the fuel system.
Possible problems include:
- Rust formation in fuel tanks.
- Corrosion of fuel injectors.
- Damage to the engines.
Long-term reliability issues could be present for vehicles not built for driving on ethanol-based fuels.
4. Cold Starting Problems
Another problem with ethanol-blended petrol is that engines are hard to start in the cold season. Ethanol evaporates differently from petrol, which may make starting the combustion process more difficult in cold conditions.
This can result in:
- Longer engine cranking time.
- Difficulty starting in the winter.
- Poor starting ability of the engines.
The problems that occur during cold starts are more likely to happen with E80 fuel than E20.
5. Higher Maintenance Costs
Ethanol raises maintenance costs over time due to its tendency to cause wear of some parts and affect fuel system components.
Potential maintenance issues are:
- An increase in the frequency of fuel filter changes.
- Additional servicing requirements.
- Fuel line, seal and/or gasket replacement.
- Increased repair costs for non-compatible vehicles.
Elderly cars can see increased maintenance costs if they are not compatible with ethanol-blended fuels.
E20 vs E80 – What are the disadvantages of each?
E20 fuel is gaining popularity as it is compatible with most of the modern vehicles, with only minor adjustments required. It provides a compromise between environmental and vehicle compatibility.
E80 fuel has a much higher percentage of ethanol and is typically used only for flex-fuel vehicles that are built for high ethanol blends. This may cause problems in standard petrol models and cause damage to the engine.
Final Verdict
Ethanol-blended petrol is a significant measure on the road towards fossil fuel independence and a reduction in emissions. It's not too easy, though. Lower fuel efficiency, compatibility issues, corrosion risks, cold-start problems, and higher maintenance costs are some of the major disadvantages associated with E20 and E80 fuels.
As always with fuel, vehicle owners must confirm that their cars are compatible with the fuel blend used and should adhere to the manufacturer's guidelines before converting to ethanol-blended petrol. The right fuel type can help keep performance up and ensure that the long-term repair bill is kept to a minimum.
