We will shut down a 2.5 million tonnes a year crude unit and some associated downstream units from April 25, 2009. Our CDU will be down for about 28 days for routine maintenance, the source added.

India plans to introduce Euro IV compliant fuel in some states from April 2009, while the rest of the country will switch over to Euro III compliant fuel.

The company directly owns seven refineries with a combined capacity of 947,000 bpd.