A fast and cost-efficient method to detect ethanol as adulterant in gasoline.

Adulteration of fuel is a global problem that needs to be curbed. Studies have proved that no technically easy solution has been developed and easily accessible to the Oil and gas industry to detect adulterated gasoline. The need therefore arises for adequate and substantial methods for easy detection of adulterated gasoline.•This study developed an effective and cost-efficient method to detect adulterated gasoline at the point of sales of Petroleum Product through the means of piece of litmus paper testing.•The method provides the marketers and gasoline users to easily detect adulterated fuel at the point of sales of Petroleum Product, to avoid damage to the combustion engine.•This method of developing a paper indicator is however efficient and meets the requirements of the issue of detection of gasoline adulteration.