What is E20 Fuel and How Does It Affect Your Motorcycle’s Engine?
India is rapidly transitioning to E20 petrol, which is a fuel blend containing 20% ethanol and 80% gasoline. While this ethanol blending reduces imports and emissions, it has a significant chemical impact on older motorcycle engines and fuel systems. Here is what you need to know about E20 fuel.
How E20 Affects Older Motorcycle Engines
- Corrosion of Metal Parts: Ethanol is highly hygroscopic, meaning it absorbs water from the air. This water-rich fuel mixture can cause rust inside iron fuel tanks and corrode carburetor jets.
- Degradation of Rubber Seals: Ethanol dissolves certain natural rubber seals, gaskets, and fuel hoses, leading to leaks over time.
- Clogged Fuel Injectors: In newer fuel-injected bikes, the cleaning effect of ethanol can loosen dirt and varnish inside the tank, clogging the fuel pump filter and injector nozzles.
How to Protect Your Engine: If you own an older motorcycle not rated for E20, inspect your fuel lines regularly for cracking and avoid leaving fuel sitting in the tank for months to prevent fuel phase separation.