E20 Petrol Burns Cleaner but Poses Moisture Risk for Older Vehicles

India's E20 petrol, a blend containing 20% ethanol, offers cleaner combustion and improved fuel system efficiency in compatible vehicles. Modern E20-compliant cars are engineered to handle the fuel blend without issue. However, ethanol's hygroscopic nature — its tendency to absorb moisture — can pose a concern for owners of older vehicles. Drivers of legacy cars are advised to exercise caution when using E20 fuel due to potential moisture-related complications in their fuel systems.
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