An ARAI report has flagged that rubber components like hoses, seals and O-rings in E10-compliant vehicles may deteriorate when used with E20 fuel. Tests showed mixed engine durability results, while two-wheelers performed acceptably. The study found no metallic damage, but fuel consumption increased by 2-6 percent compared to E10.
In a new development, a report by the Automotive Research Association of India (ARAI), which had recommended the rollout of E20 fuel, found that rubber components in fuel systems of E10-compliant vehicles show wear when run on E20. The unpublished report, reported by TOI, used as a reference by the government and vehicle manufacturers, said hoses, gaskets, seals and O-rings in these vehicles 'may need replacement.'
Rubber parts show deterioration
According to the ARAI report accessed by TOI, E20 fuel caused visible deterioration in rubber components fitted in E10-compliant vehicles. The study did not specify a timeline for replacement but flagged the parts as vulnerable to the higher ethanol blend.
Engine durability tests give mixed results
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