E20 petrol, containing 20% ethanol, is now being sold widely in India and is the standard fuel for new vehicles designed for it. Ethanol, a biofuel made from crops like sugarcane and maize, helps reduce pollution. However, owners of older vehicles, especially those up to BS3 emission standards, have faced concerns using E20 petrol.

Bajaj has clarified the best way to safely use E20 petrol in BS3 two-wheelers. The company advises adding 40 ml of a fuel system cleaner to a full tank of petrol every 1,000 kilometers. This regular cleaning prevents sticky residue from ethanol that can otherwise harm the fuel pump, injectors, and throttle body in older engines.

For BS4 and newer motorcycles, running on E20 petrol causes no damage since their engines are tested for compatibility. Even then, using a fuel system cleaner is a useful preventive measure. Alternatively, cautious users can opt for 100-octane petrol offered by HP or Indian Oil for extra care.

In the case of cars, manufacturers like Tata Motors confirm that vehicles made for E20 petrol, especially BS6 Stage 2 models, pose no risk. The automaker offers warranty coverage for any damage related to E20 petrol. For older cars, it’s best to follow the owner’s manual or use 100-octane petrol if preferred.

In summary, BS3 vehicle owners can use E20 petrol safely by regularly adding fuel system cleaner, which helps maintain engine health and avoids damage from ethanol-related deposits. This guidance ensures that even older vehicles remain efficient and trouble-free while benefiting from cleaner fuel options.