China's financial hub Shanghai, where recycled gutter oil is used to power vehicles, will have nearly 200 gas stations offering biodiesel combined with gutter oil and diesel by the end of the year, local authorities said.
"Such biodiesel is now available in 21 pilot gas stations in Shanghai. More than 2,000 vehicles are now using this kind of biodiesel everyday," said Xu Kunlin, deputy mayor of Shanghai.
He said there would be around 200 gas stations across the city providing biodiesel this year.
The city's quality supervision departments said that based on their sampling inspections, all samples had met national standards.
Drivers have said there is no big difference between using biodiesel and diesel, the report said.