India
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E20 petrol may need part replacements in older vehicles
NDTV··1 Aug
Union Minister Nitin Gadkari told Rajya Sabha on July 29 that BS-III vehicles made between April 2005 and 2016 may need rubber parts and gasket replacements when using E20 petrol. An ARAI study found ethanol blending can harden seals and hoses, reducing flexibility in older fuel system components. The government said replacements can be managed during routine servicing.
Prism
What It Means For You
- Owners of BS-III cars built between April 2005 and 2016 can ask mechanics to check rubber fuel hoses, gaskets and seals during the next service after switching to E20 petrol.
- Drivers already using E20 may notice minor mileage changes the government has acknowledged, alongside the need to monitor fuel system parts over time.
- Anyone buying a used pre-2016 vehicle can factor possible gasket and hose replacement costs into maintenance budgets during India's ethanol blending expansion.
What's Happening
- Union Minister Nitin Gadkari told Rajya Sabha on July 29 that some rubber parts and gaskets in BS-III vehicles may need replacement when using E20 petrol.
- An Automotive Research Association of India study found E20 exposure can harden, swell and weaken plastic and elastomer components in fuel seals, hoses and O-rings.
- Gadkari said replacements can be managed during routine servicing for vehicles manufactured before 2016 under India's nationwide E20 rollout programme.
When Ethanol Blends Meet Older Fuel Systems
- The ARAI report noted greater hardening and volume expansion in materials like Polyamide 66 and PVC/NBR blends compared with conventional petrol.
- Increased hardness can make rubber components brittle, while swelling can affect sealing and dimensional fit in older fuel system parts.
- India is deepening ethanol blending as part of its energy transition, with the government confirming both potential mileage effects and manageable maintenance needs for legacy vehicles.
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