E20 petrol row: Bring back lower blend of ethanol fuel at pumps, says CEA Nageswaran

While the article said available evidence does not substantiate concerns that E20 is damaging engines, it acknowledged potential problems involving older vehicles. "India has roughly 75 to 80 million older two-wheelers ... older rubber ⁠seals that are not rated for ethanol are a separate problem ... retrofitting those seals... that way will take years," the opinion piece said.